Sodium hypochlorite is also known as a. baking soda b. surfactant c. detergent d. bleach

Answers

Answer 1

Sodium hypochlorite, or NaOCl, is also known as option D: liquid bleach.

With the chemical formula NaOCl, sodium hypochlorite is an ionic chemical substance. It contains hypochlorite anion and sodium cation. There are several other names for it, including bleach and antiformin. It typically appears in the pentahydrate state.

The stable and non-explosive solid sodium hypochlorite pentahydrate is a light greenish-yellow color. It is frequently employed as a bleach or cleaning agent. Hypochlorite of sodium is a potent oxidant. When it reacts with protic acids like HCl, it produces deadly chlorine gas in addition to salts. When it reacts with certain acids (HClO), it can also produce hypochlorous acid.

To know more about Sodium hypochlorite, refer:

https://brainly.com/question/6667369

#SPJ4


Related Questions

If we want to create more heat, which side of the system (reactants or products) do we want to shift the system towards? Would we classify the above equation as an endo or exothermic reaction?

Answers

Answer: exothermic reaction

Explanation: To create more heat, shift to the product side with the exothermic reaction. An exothermic reaction produces heat. The equation is:

N2(g) + 3H2(g) <-> 2NH3(g) + heat. It's exothermic because heat is a product.

Please help!!!! Quick please!!

Answers

4. The number of each Race Car Part present in Container A are:

Body (B) - 3Cylinder (Cy) - 10Engine (E) - 2Tire (Tr) - 9How to determine number of race cars?

5. To draw the maximum number of cars that can be made from the parts in Container A:

Each car requires 1 Body (B), 4 Tires (Tr), 1 Engine (E), and 2 Cylinders (Cy).

We have 3 Bodies (B), 10 Cylinders (Cy), 2 Engines (E), and 9 Tires (Tr).

The limiting parts are the Engines (E) and the Cylinders (Cy), since we don't have enough of either part to build more than 2 cars.

Therefore, we can build a maximum of 2 complete cars from the parts in Container A, and we will have excess parts remaining:

1 Body (B)

6 Tires (Tr)

0 Engines (E)

6 Cylinders (Cy)

6. The student is incorrect because although there are 3 car bodies in Container A, we also need 4 tires, 1 engine, and 2 cylinders for each car. We don't have enough engines or cylinders to build 3 complete cars, so the number of bodies is not the limiting factor.

7. a. To determine the number of complete cars that can be built:

Each car requires 1 Body (B), 4 Tires (Tr), 1 Engine (E), and 2 Cylinders (Cy).

We have a large number of Bodies (B) and Tires (Tr), so we don't need to worry about those parts.

We only have 5 Engines (E) and 12 Cylinders (Cy).

The limiting part is the Cylinders (Cy), since each car requires 2 cylinders and we only have 12.

Therefore, we can build a maximum of 6 complete cars with the available parts:

6 Bodies (B)

24 Tires (Tr)

5 Engines (E)

12 Cylinders (Cy)

b. The limiting part is the Cylinders (Cy), since we only have enough cylinders to build 6 cars, but we have enough engines to build 5 times as many cars.

Find out more on limiting reagents here: https://brainly.com/question/19033878

#SPJ1

A team of botanists conducted an experiment
investigating the effect of pH on plant growth.
The height of the plant was measured three weeks
after planting.
1
?
3.
Based on the data they collected, what is the
optimal pH for growing basil? Explain your
answer.
Based on the data they collected, which
plant fares better than the others in low pH
environments? Explain your answer.
At which pH is there the greatest difference
between the heights of parsley and basil?
What is the height difference at that pH?

Answers

The outcomes to the scan had been now not all similar. The pots with the pH of 5.0 had no growth whatsoever. The pots with the pH of 6.0 had little growth, each with only four blades of grass. The pots with a pH of 7.0 grew well, one pot with extra blades of grass than the other, an average of 11 blades of grass

What are the elements that affect the pH of a plant environment?

Natural soil pH depends on the rock from which the soil was once fashioned (parent material) and the weathering procedures that acted on it—for instance climate, vegetation, topography and time. These approaches have a tendency to purpose a decreasing of pH (increase in acidity) over time.

There is disruption of nutrient absorption by way of the plants if it's pH increases, and hence, soil fertility is reduced, alkaline soil's pH does not lead to make bigger in nutrient absorption, soil illness does not happen.

Learn more about  effect of pH on plant growth here:

https://brainly.com/question/31459436#SPJ1

be sure to answer all parts. draw the product of the sn2 reaction and indicate stereochemistry. write the inorganic product in the answer palette.

Answers

To draw the product of an SN2 reaction and indicate stereochemistry:

1. Identify the substrate, nucleophile, and leaving group in the reaction.
2. Locate the carbon atom attached to the leaving group in the substrate. This is the electrophilic center.
3. The nucleophile will attack the electrophilic center from the opposite side of the leaving group, causing the leaving group to depart.
4. The nucleophile forms a bond with the electrophilic carbon, resulting in the formation of the product.
5. Since the nucleophile attacks from the opposite side, the stereochemistry at the electrophilic center will be inverted in the product.

To write the inorganic product in the answer palette, you should include the leaving group as a negatively charged anion (e.g., if the leaving group was Br, write Br-).

To know more about SN2 reaction:

https://brainly.com/question/30631335

#SPJ11

high quality charcoal that is light weight and easily broken is made from ______. multiple choice question.

Answers

High quality charcoal that is lightweight and easily broken is made from hardwoods such as oak, maple, and hickory.

Charcoal is a porous, black, carbon-rich material that is produced by heating organic matter (such as wood or coconut shells) in the absence of air. The quality of charcoal can vary depending on the type of organic matter used, as well as the production method.

High quality charcoal that is lightweight and easily broken is typically made from hardwoods such as oak, maple, and hickory. These woods have a high density and a low moisture content, which makes them ideal for producing charcoal with a high carbon content and low ash content. In addition, the heating process used to produce this type of charcoal is typically done at high temperatures for a short period of time, which helps to remove impurities and create a more porous and lightweight material.

Overall, the type of organic matter used and the production method are important factors in determining the quality of charcoal, with hardwoods being a common choice for producing high quality charcoal that is lightweight and easily broken.

To learn more about High quality charcoal, here

https://brainly.com/question/19402908

#SPJ4

what are omega-3 fatty acids are a type of zoochemical provided by fatty fish.

Answers

Omega-3 fatty acids are a type of zoochemical that can be found in fatty fish. Zoochemicals are compounds that are naturally present in animal-based foods and have beneficial effects on human health.

These fatty acids are important for maintaining a healthy heart and brain, and they have anti-inflammatory properties. Eating fatty fish such as salmon, tuna, and mackerel is a good way to increase your intake of omega-3 fatty acids.Omega-3 fatty acids are essential for maintaining various bodily functions, and they are particularly vital for brain health. Studies have shown that omega-3s can help improve cognitive function and reduce the risk of developing dementia and Alzheimer's disease. Additionally, these fatty acids can help lower the risk of heart disease by reducing inflammation and improving cholesterol levels. In addition to fatty fish, other foods that are high in omega-3s include chia seeds, flaxseeds, and walnuts.

learn more about fatty acids here

https://brainly.com/question/28487920

#SPJ11

Omega-3 fatty acids are a group of essential nutrients that are crucial for maintaining overall health and well-being. They are a type of zoochemical that are primarily found in fatty fish like salmon, mackerel, and sardines.

What are Omega-3 Fatty acids?

These fatty acids have been shown to have numerous health benefits, such as reducing inflammation, improving heart health, and supporting brain function. Additionally, they may play a role in preventing chronic diseases like cancer and diabetes. While omega-3 fatty acids can be obtained through diet, some people may choose to take supplements to ensure they are getting enough of this important nutrient. Fatty fish such as salmon, mackerel, and sardines are rich sources of omega-3 fatty acids. It's important to include these fatty fish in our diet to maintain overall well-being.

To know more about Fatty acids:

https://brainly.com/question/30712004

#SPJ11

what mass of calcium metal is produced when molten caf2 is electrolyzed by a current of 9.55 a for 19 h? 136 g

Answers

when molten CaF2 is electrolyzed by a current of 9.55 A for 19 h, approximately 136 g of calcium metal is produced.

To determine the mass of calcium produced when molten CaF2 is electrolyzed by a current of 9.55 A for 19 h, we'll use Faraday's Law of Electrolysis.

First, calculate the total charge passed through the electrolyte:
Charge (Q) = Current (I) × Time (t)
Q = 9.55 A × (19 h × 3600 s/h) = 653,940 C

Next, determine the number of moles of electrons (n):
n = Q / (Faraday constant F)
n = 653,940 C / (96,485 C/mol) ≈ 6.77 mol

The balanced equation for the electrolysis of CaF2 is:
2F- → F2 + 2e-
Ca2+ + 2e- → Ca

The mole ratio between calcium and electrons is 1:2. So, the number of moles of calcium produced is:
Moles of Ca = 0.5 × Moles of electrons
Moles of Ca = 0.5 × 6.77 mol ≈ 3.39 mol

Finally, calculate the mass of calcium:
Mass of Ca = Moles of Ca × Molar mass of Ca
Mass of Ca = 3.39 mol × 40.08 g/mol ≈ 136 g

To learn more about : calcium

https://brainly.com/question/29231164

#SPJ11

how many grams of solid potassiumfluoride should be added to 2.00 l of a 0.236 m hydrofluoric acid solution to prepare a buffer with a ph of 3.773? the ka of hydrofluoric acid is ka

Answers

A solution of hydrofluoric acid with a concentration of 0.236 M and a pKa of 3.15 is used to prepare a buffer with a pH of 3.773.

How to prepare a buffer with a pH of 3.773

To prepare a buffer with a pH of 3.773, we can use the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

where pH is the desired pH of the buffer, pKa is the dissociation constant of hydrofluoric acid, [A-] is the concentration of the conjugate base (KF) and [HA] is the concentration of the acid (HF).

Rearranging the Henderson-Hasselbalch equation, we get:

[A-]/[HA] = [tex]10^(^p^H ^- ^p^K^a^)[/tex]

Substituting the given values, we get:

[A-]/[HA] = [tex]10^(^3^.^7^7^3^ - ^3^.^1^5^)[/tex] = 1.738

We also know that the total concentration of the buffer solution is the sum of the concentrations of the acid and the conjugate base:

[HA] + [A-] = 0.236 M

Solving these two equations simultaneously for [A-] and [HA], we get:

[A-] = 0.145 M

[HA] = 0.091 M

The molar mass of KF is 58.10 g/mol. To calculate the mass of KF required to make the buffer, we need to first calculate the number of moles of KF needed:

moles of KF = [A-] x volume of buffer

moles of KF = 0.145 x 2.00 = 0.290

Finally, we can calculate the mass of KF required:

mass of KF = moles of KF x molar mass of KF

mass of KF = 0.290 x 58.10 = 16.809 g

Therefore, 16.809 grams of solid potassium fluoride should be added to 2.00 L of a 0.236 M hydrofluoric acid solution to prepare a buffer with a pH of 3.773.

Learn more about Henderson-Hasselbalch equation

brainly.com/question/13423434

#SPJ11

What volume, in dL, of a 0.421 M Li₃PO₄ solution contains 86.4 g of Li₃PO₄?

Answers

dL = 1.77 volume. The moles will first be located using. Mass divided by molar mass equals a mole. The volume utilising may be found next. Moles/Volume equals molarity.

Why does volume important in science?

Volume is only the amount of space that a thing occupies. There are a few methods for determining an object's volume depending on its physical state. For example, if we wanted to determine the amount of space of a box, we would multiply its length by both its height and its breadth.

How does volume relate to chemistry facts?

Physically, volume measures how much three-dimensional space is occupied by stuff (solid, liquid, or gas). It is a generated quantity with length as its foundation.

To know more about molar mass visit :

https://brainly.com/question/22997914

#SPJ1

Which substance is not a structural isomer of hexyne?


a) hex-2-yne

b) hex-3-yne

c) 3,3-dimethylpent-1-yne

d) 4-methylpent-1-yne

e) 2,3-dimethylbuta-1,3-diene

Answers

2,3-dimethylbuta-1,3-diene is not a structural isomer of hexyne. Option e is correct.

Structural isomers are molecules with the same chemical formula but different arrangements of atoms. Hexyne is a hydrocarbon with six carbon atoms and one triple bond. Option (e), 2,3-dimethylbuta-1,3-diene, is not a structural isomer of hexyne because it has a different number of carbon atoms and a different type of bond. It has four carbon atoms and two double bonds, whereas hexyne has six carbon atoms and one triple bond.

Options (a), (b), (c), and (d) are all structural isomers of hexyne because they have the same number of carbon atoms and the same type of bond but different arrangements of atoms. Hence, option e is correct.

To know more about isomer, here

brainly.com/question/13422357

#SPJ4

A reaction between liquid reactants takes place at 35.0 degrees Celsius in a sealed, evacuated vessel with a measured volume of 35.0 L. Measurements show that the reaction produced 48. g of dinitrogen difluoride gas. Calculate the pressure of dinitrogen difluoride gas in the reaction vessel after the reaction. You may ignore the volume of the liquid reactants. Be sure your answer has the correct number of significant digits.

Answers

The pressure of a gas in a sealed vessel is determined by the quantity of gas present, the ideal gas constant (R), the temperature (T), the number of moles of gas present, and the volume (V) of the vessel.

What is temperature?

The energy of atoms, molecules, and ions moving at random within a material is measured by temperature. It is expressed in measures like Celsius, Fahrenheit, Kelvin, and Rankine and represents the average kinetic energy of the particles contained in a medium. A material's state of matter, such as its solid, liquid, or gas state, is influenced by temperature. The rate of chemical reactions can be influenced by temperature, which is frequently employed to regulate that pace.

By dividing the mass produced (48. g) by the molar mass of dinitrogen difluoride ([tex]N_2F_2[/tex]) gas [tex]N_2F_2[/tex] (62.0 g/mol), which results in 0.77 mol, it is possible to determine how many moles of gas are present. The reaction's dinitrogen difluoride gas pressure vessel is

therefore equal to

[tex]0.77 mol * 8.3145 J K^{-1} mol^{-1} * 35.0 K / 35.0 L = 8.3145 J K^{-1} L^{-1} or 8.3\ kPa.[/tex]

To learn more about temperature, visit:

brainly.com/question/4735135

#SPJ1

Explain how Avogadro’s number can give two conversion factors

Answers

Answer: NA = no of molecules / no of moles

NA = no of molecules × molecular weight /weight

Explanation:

at what ph would the structure be the predominant ionization state? consider the ionization state of all three of the functional groups.

Answers

The pH at which the molecule will be predominantly in its ionized state depends on the pKa values of the functional groups and the pH of the solution.

To determine the pH of a molecule with three functional groups, we need to consider the pKa values of each group and the pH of the solution. The pKa values represent the pH at which 50% of the functional group is ionized and 50% is in the non-ionized form.

If the pH is below the pKa of a functional group, the group will be mostly in the protonated (non-ionized) form. If the pH is above the pKa, the group will be mostly in the deprotonated (ionized) form.

Therefore, we need to determine the pKa values of each functional group and the pH at which each group is mostly ionized or non-ionized. For example, if a molecule has a carboxylic acid group (pKa = 4.5), an amine group (pKa = 9.5), and a phenol group (pKa = 10), we can use the following table to determine the predominant ionization state at different pH values:

pH    Carboxylic acid       Amine              Phenol

1           Protonated        Protonated         Protonated
4.5      Half ionized        Protonated         Protonated
7      Mostly ionized      Half ionized         Protonated
9.5   Mostly ionized      Mostly ionized    Half ionized
10     Mostly ionized      Mostly ionized    Mostly ionized
14      Deprotonated      Deprotonated     Deprotonated

Therefore, the pH at which the molecule will be predominantly in its ionized state depends on the pKa values of the functional groups and the pH of the solution.

For more such questions on predominant ionization state, visit:

brainly.com/question/30882629

#SPJ11

missed this? read section 15.3 (pages 637 - 642) ; watch kcv 15.3 . a reaction in which a , b , and c react to form products is zero order in a , one-half order in b , and second order in c . part a part complete write a rate law for the reaction. write a rate law for the reaction. rate

Answers

a) The overall order of the reaction is 5/2.

b) Since the reaction is zero order in A, doubling the concentration of A will not have any effect on the reaction rate, doubling the concentration of B will increase the reaction rate by a factor of √2 and doubling the concentration of C will increase the reaction rate by a factor of 4.

a) The overall order of the reaction is the sum of the orders of the individual reactants:

Overall order = 0 + 1/2 + 2 = 5/2

b) To determine the effect of doubling the concentration of A on the reaction rate, we can use the rate law:

Rate = [tex]k[A]^{0}[B]^{1/2} [C]^{2}[/tex]

If we double the concentration of A, the rate law becomes:

Rate' =[tex]k[A]^{0}[B]^{1/2} [C]^{2}[/tex]

Since the order of A is zero, the rate constant k' is equal to the original rate constant k:

k' = k

Substituting k' and simplifying, we get:

Rate' = [tex]k[A]^{0}[B]^{1/2} [C]^{2}[/tex] = Rate

Therefore, doubling the concentration of A does not affect the reaction rate.

To determine the effect of doubling the concentration of B on the reaction rate, we can use the rate law:

Rate = [tex]k[A]^{0}[B]^{1/2} [C]^{2}[/tex]

If we double the concentration of B, the rate law becomes:

Rate'' = [tex]k''[A]^{0}[B]^{1/2} [C]^{2}[/tex]

where k'' is the new rate constant.

Substituting the order of B and simplifying, we get:

Rate'' = [tex]k''[A]^{0}[B]^{1/2} [C]^{2}[/tex] × √2

Comparing this expression to the original rate law, we see that doubling the concentration of B increases the reaction rate by a factor of √2.

To determine the effect of doubling the concentration of C on the reaction rate, we can use the rate law:

Rate = [tex]k[A]^{0}[B]^{1/2} [C]^{2}[/tex]

If we double the concentration of C, the rate law becomes:

Rate''' = [tex]k'''[A]^{0}[B]^{1/2} [C]^{2}[/tex]

where k''' is the new rate constant.

Substituting the order of C and simplifying, we get:

Rate''' = [tex]k'''[A]^{0}[B]^{1/2} [C]^{2}[/tex] × 4

Comparing this expression to the original rate law, we see that doubling the concentration of C increases the reaction rate by a factor of 4.

To learn more about concentration follow the link:

https://brainly.com/question/10725862

#SPJ4

The complete question is:

A reaction in which A,B, and C react to form products is zero order in A, one-half order in B and second order in C.

(a) What is the overall order of the reaction?

(b) By what factor does the reaction rate change if A is doubled (and the other reactant concentrations are held constant)? Express your answer numerically.

what is the concentration in molarity of a solution made by dissolving 20.0 grams of koh in 150.0 ml of h2o (molar mass of koh

Answers

The concentration in molarity of the solution is 2.72 M.

To calculate the molarity of the solution, we need to first calculate the number of moles of KOH present in the solution.

Number of moles of KOH = mass of KOH / molar mass of KOH= 20.0 g / 56.11 g/mol= 0.356 mol

Next, we need to calculate the volume of the solution in liters.

Volume of the solution = 150.0 mL = 0.150 L

Finally, we can calculate the molarity of the solution using the formula:

Molarity = number of moles / volume of solution in litersMolarity = 0.356 mol / 0.150 LMolarity = 2.72 M

Therefore, the concentration in molarity of the solution made by dissolving 20.0 grams of KOH in 150.0 mL of H2O is 2.72 M.

To learn more about molarity of the solution, here

https://brainly.com/question/16587536

#SPJ4


Calculate the pH of a solution that contains 52. mL of 0.428 M HCl, and 44.5
mL of 0.500 M methylamine, CH3NH₂. The pKb, of methylamine is 3.34.

Answers

Answer:

Explanation:

The pH of the solution is 10.80

The pH of the solution is 10.80.

Explanation: This can be calculated using the Henderson-Hasselbalch equation, which takes into account the acid dissociation constant (pKa) of the acid and the concentration of the acid and its conjugate base. The HCl dissociates completely in water, so it does not affect the pH calculation.

The methylamine acts as a weak base and reacts with water to form its conjugate acid, which determines the pH of the solution.

The pKb of methylamine is used to calculate its pKa, which is then used in the Henderson-Hasselbalch equation.

Refer to this link to know more about how to calculate the pH of a solution
https://brainly.com/question/30881040?referrer=searchResults

The body is capable of manufacturing all of the amino acids it needs but it must have sufficient energy to be able to do so.True or False

Answers

The body is capable of producing all of the amino acids it need, but it must have enough energy to do so. False

The body is capable of producing some of the amino acids it needs, but there are nine essential amino acids that it cannot make and must be obtained from the diet. Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine are among the necessary amino acids.

The body also requires energy to synthesize non-essential amino acids, and if there is insufficient energy, the body may not be able to produce enough of these amino acids. Therefore, both dietary intake and energy availability are important for optimal amino acid production and overall health.

Learn more about amino acids

https://brainly.com/question/14583479

#SPJ4

The statement "The body is capable of manufacturing all of the amino acids it needs but it must have sufficient energy to be able to do so. " is False.

The body is capable of producing some of the amino acids it needs, but there are nine essential amino acids that it cannot make and must be obtained from the diet. These essential amino acids include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

The body also requires energy to synthesize non-essential amino acids, and if there is insufficient energy, the body may not be able to produce enough of these amino acids. Therefore, both dietary intake and energy availability are important for optimal amino acid production and overall health.

For more such questions on amino acids

https://brainly.com/question/30265108

#SPJ11

A motion aftereffect occurs if either leftward or rightward motion continues long enough for the strongly responding M neuron (ML or MR) to be:

Answers

A motion aftereffect occurs if either leftward or rightward motion continues long enough for the strongly responding M neuron (ML or MR) to adapt or become fatigued, causing a perception of motion in the opposite direction when viewing a stationary object.


A motion aftereffect occurs if either leftward or rightward motion continues long enough for the strongly responding M neuron (ML or MR) to be fatigued or adapted. This happens because the neurons become less responsive to the continuous stimulus, and when the motion stops, the balance between the two neurons is temporarily disrupted, resulting in the perception of motion in the opposite direction.

A neuron is a type of cell that communicates information in the nervous system via electrical and chemical impulses. It serves as the essential component of the nervous system and is in charge of carrying out the intricate tasks that the brain, spinal cord, and peripheral nerves must perform.

The cell body, dendrites, and axon are the three components that make up a normal neuron. The nucleus and other organelles that are in charge of the cell's metabolic processes are found in the cell body. Receiving information from neighbouring neurons and sending them to the cell body are the dendrites, which are thin, branched extensions of the cell body. The electrical and chemical impulses are carried away from the cell via the axon, a long, slender projection of the cell body.

Learn more about neuron here:

https://brainly.com/question/31215300

#SPJ11

A movement after effect happens if both leftward or rightward movement maintains lengthy sufficient for the strongly responding M neuron (ML or MR) to evolve or emerge as fatigued.

A movement aftereffect happens if both leftward or rightward movement maintains lengthy sufficient for the strongly responding M neuron (ML or MR) to be fatigued or adapted. This occurs due to the fact the neurons emerge as much less attentive to the non-stop stimulus, and while the movement stops, the stability among the 2 neurons is briefly disrupted, ensuing withinside the belief of movement withinside the contrary route. A neuron is a kind of mobileular that communicates facts withinside the fearful gadget thru electric and chemical impulses. It serves because the critical factor of the fearful gadget and is in price of wearing out the complicated responsibilities that the brain, spinal cord, and peripheral nerves should perform. The mobileular frame, dendrites, and axon are the 3 additives that make up a everyday neuron. The nucleus and different organelles which can be in price of the cell's metabolic strategies are determined withinside the cellular frame.

To learn more about neuron check the link below-

https://brainly.com/question/13061744

#SPJ4

Send HELP!!!!!!!!!!!!!!!!!!!

Answers

The enthalpy of the reactions include:

(a) 1613 kJ/mol(b) 1613 kJ/mol(c) -276 kJ/mol(d) -1296 kJ/mol(e) -203 kJ/mol

How to calculate enthalpy?

Using the heat of formation values listed below:

ΔHf°(Si) = 0 kJ/mol

ΔHf°(SiF₄) = -1613 kJ/mol

ΔHf°(F₂) = 0 kJ/mol

ΔHf°(H₂O) = -286 kJ/mol

ΔHf°(SO) = 248 kJ/mol

ΔHf°(H₂SO₄) = -814 kJ/mol

ΔHf°(KOH) = -424 kJ/mol

ΔHf°(K₂O₂) = -496 kJ/mol

ΔHf°(O₂) = 0 kJ/mol

ΔHf°(Fe₃O₄) = -1118 kJ/mol

ΔHf°(HCl) = -92 kJ/mol

ΔHf°(FeCl₂) = -341 kJ/mol

ΔHf°(FeCl₃) = -399 kJ/mol

The enthalpy of each reaction is:

(a) ΔH°rxn = [ΔHf°(Si) + 2ΔHf°(F₂)] - ΔHf°(SiF₄)

ΔH°rxn = [0 + 2(0)] - (-1613) kJ/mol

ΔH°rxn = 1613 kJ/mol

(b) ΔH°rxn = [ΔHf°(Si) + 2ΔHf°(F₂)] - ΔHf°(SiF₄)

ΔH°rxn = [0 + 2(0)] - (-1613) kJ/mol

ΔH°rxn = 1613 kJ/mol

(c) ΔH°rxn = [ΔHf°(H₂SO₄)] - [ΔHf°(SO) + ΔHf°(H₂O)]

ΔH°rxn = (-814) - [248 + (-286)] kJ/mol

ΔH°rxn = -276 kJ/mol

(d) ΔH°rxn = [6ΔHf°(KOH) + ΔHf°(O₂)] - [3ΔHf°(K₂O₂) + 3ΔHf°(H₂O)]

ΔH°rxn = [6(-424) + 0] - [3(-496) + 3(-286)] kJ/mol

ΔH°rxn = -1296 kJ/mol

(e) ΔH°rxn = [2ΔHf°(FeCl3) + ΔHf°(FeCl2) + 4ΔHf°(H₋O)] - [ΔHf°(Fe₃O₄) + 8ΔHf°(HCl)]

ΔH°rxn = [2(-399) + (-341) + 4(-286)] - [(-1118) + 8(-92)] kJ/mol

ΔH°rxn = -203 kJ/mol

Find out more on enthalpy here: https://brainly.com/question/16985375

#SPJ1

which of the following statements is incorrect? select one: a. the entropy is larger when a disolved salt in a liquid is uniform or spread throughout the liquid than when it is highly concentration in a small portion of the liquid. b. an iron nail at 100oc has more entropy than the same nail at 250oc c. entropy decreases when a gas dissolves in a solvent, mainly because the dissolved molecules are confined to a smaller volume. d. adding heat to a substance always increases its entropy. e. entropy increases in going from the solid to the liquid to the gaseous state. f. when a solid dissolves in a liquid the entropy generally increases because the positional entropy increases. for example, dissolving a sugar cube in water. g. the kinetic energy of the particles in a sample increases as the temperature increases. the disorder increases as the motion of the particles increases. consequently, entropy increases as the temperature increases

Answers

The incorrect statement for entropy is the entropy is larger when a dissolved salt in a liquid is uniform or spread throughout the liquid than when it is highly concentration in a small portion of the liquid. The answer to this question is A..

Change in entropyThe entropy loss from ion binding and hydration decreases with increasing salt concentration, and at a certain temperature, the closure rate then increases noticeably with increasing ion concentration.The straightforward response is that water's entropy rises when salt dissolves in it, reducing the freezing point. A measure of disorder in a substance is called entropy, which is frequently used interchangeably with the word chaos.Entropy rises during the sublimation and evaporation processes, which transform a substance from a solid to a gas or a liquid to a gas. In a similar vein, entropy rises with the dissolution of a solid in water.A substance being divided into several pieces results in an increase in entropy. Due to the solute particles' separation from one another when a solution is generated, the dissolution process increases entropy.

For more information on entropy kindly visit to

https://brainly.com/question/15025401

#SPJ1

I NEED HELP ON THIS ASAP! PLEASE IT'S DUE TODAY!!

Answers

1) Divide through 2

2) Equation 2 has the lowest coefficients

3) No, there is no other factor that can divide equation 2

4) An equation is correct if all the atoms on both sides of the equation have the same number.

What is a balanced reaction equation?

A balanced reaction equation is a chemical equation that represents a chemical reaction with the same number of atoms of each element on both the reactant and product sides of the equation. In other words, the equation is balanced when the total number of atoms of each element is the same on both sides of the equation.

This is achieved by adjusting the coefficients (the numbers in front of the chemical formulas) of the reactants and products until the number of atoms of each element is equal on both sides.

Learn more about reaction equation:https://brainly.com/question/3588292

#SPJ1

a patient's urine sample has a density of 1.02 g/ml. if 1250 ml of urine was excreted by the patient in one day, what mass of urine was eliminated?

Answers

Density is defined as the mass of a substance per unit volume. In this case, the density of urine is given as 1.02 g/ml. This means that for every 1 ml of urine, there is 1.02 g of mass.

To find the mass of urine eliminated by the patient in one day, we need to multiply the volume of urine by its density. The volume of urine is given as 1250 ml.

Mass of urine = Volume of urine x Density of urine

Mass of urine = 1250 ml x 1.02 g/ml

Mass of urine = 1275 g

Therefore, the mass of urine eliminated by the patient in one day is 1275 g.

Learn more about  volume here

https://brainly.com/question/1578538

#SPJ11

which of the following are characteristic properties of ionic compounds? select all that apply. multiple select question. nonconductors in the solid state high melting points nonconductors in aqueous solution hard but flexible

Answers

The characteristic properties of ionic compounds are: Non-conductors in the solid state and High melting points.

What are the properties of ionic compounds?

Ionic compounds are typically solids at room temperature and have a crystalline structure. They are composed of positively charged ions (cations) and negatively charged ions (anions) held together by electrostatic forces in a lattice structure.

In their solid state, they are non-conductors of electricity because the ions are fixed in place and cannot move to conduct a current. However, when melted or dissolved in water, they can conduct electricity due to the movement of the ions.

Ionic compounds also tend to have high melting and boiling points because of the strong electrostatic forces holding the ions together in the lattice.

Learn more about ionic compounds here:

https://brainly.com/question/14614762

#SPJ1

2) 1 The particles of a substance gain energy and change from a regular
ordered structure to a disordered structure with large distances between
the particles.
Which change of state is described?
A boiling
B evaporation
C melting
D sublimation

Answers

The change of state described is melting (option C). In melting, the particles of a substance gain energy and change from a regular ordered structure to a disordered structure with large distances between the particles, which results in the substance changing from a solid to a liquid state.

What is meant by the term 'melting'?

Melting is a physical process in which a substance changes from its solid state to its liquid state. It occurs when a solid substance absorbs enough heat energy to overcome the forces of attraction between its particles, causing the particles to move faster and become less ordered.

As a result, the substance loses its definite shape and takes the shape of the container in which it is placed, while retaining its volume. The temperature at which a substance melts is known as its melting point.

An example of melting is the melting of ice. At the melting point of water, which is 0°C (32°F) at standard pressure, ice changes from its solid state to its liquid state. The resulting liquid water takes the shape of its container, such as a glass, but still has the same volume as the ice from which it was melted.

Learn more about melting here:

https://brainly.com/question/15873508

#SPJ9

without clearing the plot, examine the same alkyl groups with chlorine as the functional group. what is the normal boiling point of methyl chloride, the compound formed between the methyl group and chlorine?

Answers

The normal boiling point of methyl chloride, for a given data, is -23.8°C

The bubbling point (boiling point) of a compound is affected by numerous components, checking the quality of intermolecular powers between particles, the degree and shape of the particles, and the restraint of the particles.

When the alkyl bunches are supplanted with chlorine, the coming around compound has diverse intermolecular powers and restraints compared to the beginning compound. In common, particles with polar covalent bonds tend to have higher bubbling centers than nonpolar particles with comparable atomic weights.

Methyl chloride (CH3Cl) may be a polar molecule with a dipole scaled down due to the separation in electronegativity between carbon and chlorine. The quality of the dipole-dipole powers between particles of methyl chloride is more prominent than the quality of the van der Waals powers between particles of methane, which is the compound molded between two methyl bunches.

As a result, the bubbling point of methyl chloride is higher than the bubbling point of methane. The standard bubbling point of methane is -161.5°C, though the commonplace bubbling point of methyl chloride is -23.8°C.

In this way, the commonplace bubbling point of methyl chloride, the compound molded between the methyl collect and chlorine, is -23.8°C.

To know more about boiling point  refer to this:

https://brainly.com/question/40140

#SPJ4

 

Explain why the substances in a suspension would eventually settle/separate after being mixed but a colloid would not.

Answers

A suspension is a heterogeneous mixture in which particles are dispersed throughout a liquid or gas medium, but they are large enough to eventually settle or separate over time due to gravity or other external forces. In contrast, a colloid is a type of mixture in which particles are dispersed evenly throughout a medium, but they are small enough to remain suspended indefinitely due to the Brownian motion of the surrounding liquid or gas molecules.

The particles in a suspension are usually much larger and heavier than those in a colloid, and they are not held in place by any sort of intermolecular or electrostatic forces. Therefore, they are more susceptible to settling or separating out of the mixture over time. In addition, the particles in a suspension can be easily separated from the liquid or gas medium by filtration or sedimentation, which is not possible with colloids.

On the other hand, the particles in a colloid are small enough to be affected by Brownian motion, which is the random movement of molecules in the surrounding liquid or gas. This constant movement keeps the particles in suspension, preventing them from settling or separating out of the mixture. Furthermore, colloids can exhibit some unique properties, such as Tyndall scattering or the ability to pass through a semipermeable membrane, that distinguish them from both solutions and suspensions.

Question 9 (2 points) (10.03 MC) In a few sentences, describe what this weather map tells you about the weather. (2 points) L H​

Answers

This weather map shows that there is a low pressure system in the north and a high pressure system in the south.

What is weather?

Weather is the study of atmospheric conditions that exist in a specific area over a short period of time. It is the sum of all atmospheric conditions including temperature, humidity, wind, air pressure, cloud cover and precipitation. Weather is an important factor in determining the temperature, humidity and other characteristics of the environment. It affects human activities such as agriculture, transportation and recreation. Weather is dynamic and constantly changing. It is affected by a variety of factors such as solar radiation, air pressure, ocean currents, land topography and human activities. Weather is also affected by climate, which is the average weather pattern over a long period of time. Understanding weather is important for many reasons, including to predict storms and floods, to plan for extreme weather events, and to prepare for natural disasters.

This weather map shows that there is a low pressure system in the north and a high pressure system in the south. The low pressure system is bringing cooler temperatures and precipitation, while the high pressure system is bringing warmer temperatures and clear skies. There is a cold front moving eastward from the north, and a warm front moving eastward from the south.

To learn more about weather

https://brainly.com/question/29709289

#SPJ9

an electron in an atom makes a transition from a state with energy 3.89 ev to a state with energy 1.44 ev and emits a photon. find the wavelength of that photon.

Answers

When an electron transitions from a higher energy state to a lower energy state within an atom, it releases energy in the form of a photon.

The energy of this photon is given by the difference between the energy levels of the initial and final states of the electron. In this case, the electron transitions from a state with energy 3.89 eV to a state with energy 1.44 eV. The energy released in this transition is: ΔE = E₂ - E₁ = 1.44 eV - 3.89 eV = -2.45 eV



Note that the negative sign indicates that energy is being released.
We can now use the relationship between energy and wavelength for a photon: E = hc/λ
where h is Planck's constant (6.626 x 10^-34 J s), c is the speed of light (2.998 x 10^8 m/s), and λ is the wavelength of the photon. Rearranging this equation to solve for λ, we get: λ = hc/E


Plugging in the values we know, we get:
λ = (6.626 x 10^-34 J s)(2.998 x 10^8 m/s)/(-2.45 eV x 1.602 x 10^-19 J/eV)
Note that we converted electron volts (eV) to joules (J) using the conversion factor 1.602 x 10^-19 J/eV.
Simplifying this expression, we get: λ = 507 nm, Therefore, the wavelength of the photon emitted by the electron transition is 507 nm.

To know more about atom click here

brainly.com/question/13973654

#SPJ11

what mass of cu(s) is electroplated by running 23.0 a of current through a cu2 (aq) solution for 4.00 h ? express your answer to three significant figures and include the appropriate units.

Answers

Electrolysis is a process that is used to electric current is passed in a solution. The mass of cu(s) is electroplated by running 23.0 a of current through a cu2 (aq) solution for 4.00 h is equals to 64 grams.

Electrolysis is a process in which an electric current is passed in a solution. Solving electrolysis problem is more on stoichiometric calculations are, coulombs = amperes x time

1 Faraday = 96,485 coulombs

1 Faraday = 1 mole of electrons

We have to determine the mass of cu(s) is electroplated by running 23.0 a of current through a Cu (aq) solution for 4.00 h. Half reaction, [tex]Cu^{2+ } + 2e^{-} --> Cu[/tex]

Current, I = 23.0 A

Time, t = 4 hours = 4 × 3600 seconds

= 14400 seconds

Calculate the moles of Copper, n=Q ×z× F

where, Q = total charge in coulombs

F = Faraday constant = 96485 per molez = the number of electrons in the half-cell reaction = 2

Computing for Q = 13.5coulomb sec (14,400 sec) = 194,400 coulomb-sec²

So, n = 194,400 coulomb-s² /(96485 coulomb)

= 1.007 moles Cu

Molar mass = 63.55 grams per mole

Molar mass is defined as the mass of substance divided by moles of substance.

=> 63.55 grams per mole = m/ 1.007 moles Cu

=> m = 63.55 g × 1.007

=> m = 64 grams

Hence, required value is 64 grams.

For more information about electrolysis, refer:

https://brainly.com/question/24063038

#SPJ4

why a beaker of warm water was used as the heat source to remove methylene chloride by simple distillation in order to recover the crude caffeine.

Answers

Higher temperatures may affect the stability of the plant extracts. So usually a lower temperature heat source are used in such processes. So here to remove methylene chloride a beaker of warm water is used.

Caffeine is soluble in water, but it is more soluble in organic solvents like methylene chloride. So such solutions are usually preferred for the extraction of plant components. The brewed tea or coffee is mixed with organic solvents like methylene chloride. After vigorous shaking, the caffeine is extracted onto the organic layer from aqueous layer.

The aqueous layer is separated here and the organic layer can be distilled by using a lower temperature, compared to aqueous layer. So here a water bath can be used to remove methylene chloride and we could get nearly pure caffeine.

If either water is used as solvent, a higher temperature is needed for extraction. Here methylene chloride just need a smaller temperature to evaporate and can be done by using a water bath.

So, a beaker of warm water is used as the heat source to improve stability of the product.

For more information regarding extraction of caffeine, kindly refer

https://brainly.com/question/29426391

#SPJ4

Other Questions
Sam can't medically come back to work because of his pulmonary issues for a year. He has a short-term group disability policy that requires a 30-day waiting period and a benefit duration of 90 days. He also has a private long-term disability policy that has a 180-day waiting period and a benefit duration of two years. What will be his gaps in coverage, if at all? a. Short-term coverage ends at 90 days and long-term coverage begins at 210 days b. Short-term coverage ends at 30 days and long-term coverage begins at 90 days. c. Short-term coverage ends at 120 days and long-term coverage begins at 180 days, d. Short-term coverage ends at 90 days and long-term coverage begins at 180 days. in the middle of the 17th century, england was embroiled in a civil war between: I NEED HELP ON THIS ASAP! PLEASE IT'S DUE TODAY!! is this story specific only to jamica?Explain your thought. Why does the author consider some forms of embarrassment good for us, a Contrast and Contradiction from what we might expect? Do you agree with this view? the section of the coast that extends from normal high tide level to the highest elevation on land that is effected by storm waves is called the: question 1 options: nearshore. foreshore. backshore. offshore. annalucia is giving a speech on behalf of her company Theo: Argumentative Paper in favor of, What is the role of the Holy Spirit today? Jamie was working on his math homework with his friend, Kent. Jamie looked at the following problem. 9. 5 (8) 6. 5 He told Kent that he did not know how to subtract negative numbers. Kent said that he knew how to solve the problem using only addition. What did Kent mean by that? Explain. Then, show your work, and represent the answer as a single rational number HELPStained glass windows come in circles, semicircles, and quarter-circles. If Flo buys 2 circular windows, 5 semicircular windows, and 20 quarter-circular windows that all have a radius of 4 feet, what is the total area of the windows purchased by Flo? Round your final result to the nearest hundredth square foot.Area of circle: _____Area of semicircles: _____Area of quarter-circles: _____Total area of pattern: _____AnswersArea of semicircles = 125.60Area of quarter-circles=125.6Area of circle=50.24Total area of pattern=238.64Area of quarter-circles = 251.20Area of circle =100.48 Total area of pattern = 477.28Area of semicircles=62.8 the chemical associated with the homeostatic sleep drive is 1,000 J of heat is added to 50 g of water. What is the change in temperature of the water?options : 20 C4.18C718C4.78C the physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. the distribution of the number of daily requests is bell-shaped and has a mean of 42 and a standard deviation of 4. using the empirical rule (as presented in the book), what is the approximate percentage of lightbulb replacement requests numbering between 42 and 50? 1. You go to the ice cream shop with your friends and you can choose an ice cream, a toppingand sprinkles. How many different sundaes can you make when you order one flavor of icecream, one topping and one color of sprinkles from the chart below? Show all possibleoutcomes in a tree diagram.Ice CreamChocolateVanillaStrawberryToppingFudgeMarshmallowSprinklesChocolateRainbowHow many sample spaces are there? HINT: How many possible combinations?b. P (Chocolate, Fudge, Rainbow) can yall help me with this question this would rlly help me out! How has "low-road capitalism" led to "a malnourished and mean kind of freedom that kept you out of chains but did not provide bread or shelter" The bandwagon effect is an example of the way _____ directly affects foreign exchange rates. a zero-coupon bond pays no interest. explain. when bonds are issued at a premium, the debt declines each period. explain. Explain how Avogadros number can give two conversion factors A nurse is preparing to apply wrist restraints to a client to prevent her from pulling out an IV catheter. Which of the following actions should the nurse take? a. keep the padded portion of the restrains against the wrist b. ensure enough room to fit one finger b/w the restrains and the wrist c.attach the ties of the restrains to a non-movable part of the bed frame d.use a know that will tighten as the client moves