Answer:
mf i was trying to
find out the same thing
Explanation:
What does that mean about the densities of the phases of water?.
Answer:
The solid state is the most dense, followed by the liquid state, then the gas state. The solid state is more dense than the liquid state.
Explanation:
Does this answer your question???
Hello people ~
Ignition temperature is the lowest temperature at which a substance catches fire. Identify the correct option regarding the ignition temperature of a good fuel.
A. Ignition temperature below room temperature
B. Ignition temperature above room temperature
C. Ignition temperature equal to 100∘C
D. Ignition temperature equal to room temperature
B is your answer
If the ignition temperature of a fuel is lower than the room temperature, then it can catch fire very easily.
Therefore for an ideal fuel, the ignition temperature should be higher than the room temperature.
let's observe one by one
#1
If ignition temperature is below room temperature the fuel can catch fire at once.
No#2
Ignition temperature above room temperature is applicable as the fuel won't catch fire easily
True#3
It's boiling point of water not fuels
False#4
Equal to room temperature is same as first one can cause damage
NoIn healthcare settings where sterilization is an absolute necessity, what method of sterilization will typically be used?
pasteurizing
disinfecting
autoclaving
boiling
lyophilizing
Answer:
Disinfecting (or boiling)
Explanation:
They'd want to disinfect everything so that it is germless. Boiling is a possible answer as well because you can boil certain things to rid them of germs.
Calculate the volume that 2.25 mol of o2(g) will occupy at stp.
Explanation:
[tex]2.25mol \times \frac{22.4lit}{1mol} = 50.4 lit o2 [/tex]
Draw the structures of the aldol addition and condensation products of 3‑methylbutanal
Aldol condensation involves two aldehydes or two ketones or an aldehyde and a ketone. The product of the reaction is shown in the image attached.
What is Aldol condensation?Aldol condensation is a reaction that involves two aldehydes or two ketones or an aldehyde and a ketone. This reaction occurs at the carbonyl group as one of the carbonyl compounds is in the enolate form.
The product of the reaction is shown in the image attached. This gives the mechanism for the Aldol condensation of the compound 3‑methylbutanal.
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What are 3 ways that radio waves are used in everyday life?
What are 3 ways that infrared waves are used in everyday life?
Thank You!
Explanation:
which of the following is additive inverse of the following
What mass of glucose can be produced from photosynthesis reaction using 10.0 mols co2
Answer:
300.06 grams of glucose can be produced from a photosynthesis reaction that occurs using 10 moles of carbon dioxide.
Explanation:
What are the factors that affect freezing-point depression
60 points please help me i will appreciate it!
Answer:
[tex]\huge\boxed{\sf T = 682.4 \ K}[/tex]
Explanation:
Given Data:
Mole = n = 0.1 mol
Pressure = P = 530 mmHg = 0.7 atm
Volume = v = 8 L
Ideal gas constant = R = 0.8206 L atm K⁻¹ mol⁻¹
Required:
Temperature = T = ?
Formula:
Pv = nRT
Solution:
Rearranging for T
[tex]\displaystyle T = \frac{Pv}{nR} \\\\T = \frac{(0.7)(8)}{(0.1)(0.08206)} \\\\T = \frac{5.6}{0.008206} \\\\T = 682.4 \ K\\\\\rule[225]{225}{2}[/tex]
What phase does chloride occur in?
Answer:
solid
Explanation:
chlorine is liquid
How many milliliters of 0. 120 m naoh are required to titrate 50. 0 ml of 0. 0998 m butanoic acid to the equivalence point? the ka of butanoic acid is 1. 5 × 10-5.
The volume of NaOH required to titrate 50 mL of 0.0998 M butanoic acid to the equivalence point is 41.58 mL
Balanced equationC₄H₈O₂ + NaOH —> C₄H₇O₂Na + H₂O
From the balanced equation above,
The mole ratio of the acid, C₄H₈O₂ (nA) = 1The mole ratio of the base, NaOH (nB) = 1From the question given above, the following data were obtained:
Concentration of base, NaOH (Cb) = 0.12 MConcentration of acid, C₄H₈O₂ (Ca) = 0.0998 MVolume of acid, C₄H₈O₂ (Va) = 50 mL Volume of base, NaOH (Vb) =?CaVa / CbVb = nA / nB
(0.0998 × 50) / (0.12 × Vb) = 1
4.99 / (0.12 × Vb) = 1
Cross multiply
0.12 × Vb = 4.99
Divide both side by 0.12
Vb = 4.99 / 0.12
Vb = 41.58 mL
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Devise a two‑step synthesis of the alkene from the ketone using the reagents provided
We can convert ketones to alkenes by the use of;
1)B2H6 in THF
2) H2O2/NaOH
What is a ketone?A ketone is a compound of the sort RCO. The compound contains a carbon - oxygen double bond. The ketone can be used in the synthesis of an alkene. The question is incomplete hence I can only give a general answer.
The reaction involves the following reagents;
1)B2H6 in THF
2) H2O2/NaOH
When these two reagents are applied any ketone can be converted to an alkene.
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The two-step synthesis of the alkene from the ketone using the reagents provided is
Step1: B₂H₆ in THF.
Step2: H₂O₂ / NaOH
What is alkene?An alkene is a hydrocarbon compound containing double bonds between carbons.
The process of making alkenes from ketones or aldehyde is called the witting reaction or witting olefination.
Thus, the two-step synthesis of the alkene from the ketone using the reagents provided is
Step1: B₂H₆ in THF.
Step2: H₂O₂ / NaOH
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The molar mass of barium nitrate (ba(no3)2) is 261.35 g/mol. what is the mass of 5.30 × 1022 formula units of ba(no3)2? 0.0900 g 12.0 g 23.0 g 3,130 g
Molar mass is the ratio of the mass to that amount of the substance. The mass of the barium nitrate in the formula unit is 23.0 grams.
What is mass?The mass of a substance is the product of the molar mass of the compound and the number of moles of the compound.
Given,
Molar mass of barium nitrate = 261.35 g/mol
If, [tex]6.022 \times 10^{23}[/tex] have a mass of 261.35 g/mol then, [tex]5.30 \times 10^{22}[/tex] formula units will have a mass of,
[tex]\begin{aligned}& = \dfrac{261.35 \times 5.30 \times 10^{22}}{6.022\times 10^{23}}\\\\&= 23.0\;\rm gm\end{aligned}[/tex]
Therefore, option C. 23.0 gm is the mass of barium nitrate.
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Answer:
CExplanation:
23.0g
3. How many moles of solute are present in a 2300 mL solution of 0.68 M MgSO.?
There are 1.56 moles of solute present in a 2300 mL solution of 0.68M MgSO4.
How to calculate number of moles?The number of moles of a substance can be calculated by using the following formula:
molarity = no. of moles / volume
According to this question, a volume of 2300 mL solution is contained in 0.68 M MgSO4. The number of moles is calculated as follows:
no of moles = 0.68M × 2.3
no. of moles = 1.56
Therefore, there are 1.56 moles of solute present in a 2300 mL solution of 0.68M MgSO4.
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Which correctly describes the which correctly describes the relationship between a hydrate, water, and an anhydrous compound?
Heating an anhydrous compound forms water and a hydrate.
O Adding water to an anhydrous compound forms a hydrate.
O Combining an anhydrous compound and a hydrate produces water.
O Removing a hydrate from an anhydrous compound produces water.
Answer:
adding water to an anhydrous compound forms a hydrate.
Explanation:
The statement which correctly describes the relationship between a hydrate, water, and an anhydrous compound is adding water to an anhydrous compound forms a hydrate. The correct option is A.
What are anhydrous compounds?Anhydrous means without water, so the compounds that do not contain water are anhydrous compounds. Some examples are sodium sulfate, hydrogen fluoride, etc.
Hydrates are the compounds that contain water as the H2O molecules. These compounds lose their structure if water molecules are removed from the compound.
So, when water is added to the anhydrous molecules, it converts into hydrates. An example is sodium sulfate decahydrate.
Thus, the correct option is A. Adding water to an anhydrous compound forms a hydrate.
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Which ecosystem is more likely to become unstable one with many kinds of plants and animals or one with few kinds?
Answer:
One with a few kinds is more likely to become unstable.
Explanation:
A lack of biodiversity means there is a lower chance of them having traits that enable them to adapt to a changing environment. A lack of biodiversity is usually caused by humans. It could be the result of habitat loss, invasive species, overexploitation, pollution, or climate change.
If 1. 3618 moles of AsF3 are allowed to react with 1. 0000 mole of C2Cl6, what would be the theoretical yield of AsCl3, in moles
Answer:
AsF3:C2CI6
4:3
1.3618 moles: 1.02135 moles(1.3618÷4×3)
C2CI6 is the limting reagent
So the number of moles for AsCI3 is 0.817 moles( number of moles of the limting reagant) ÷3 ×4 (according to ratio by balancing chemical equation)=1.09 moles(3 s.f.)
or
Balanced equation
4AsF3 + 3C2Cl6 → 4AsCl3 + 3C2Cl2F4
Use stoichiometry to calculate the moles of AsCl3 that can be produced by each reactant.
Multiply the moles of each reactant by the mole ratio between it and AsCl3 in the balanced equation, so that the moles of the reactant cancel, leaving moles of AsCl3.
Explanation:
Which compound has the empirical formula with the greatest mass?
A.
C2H6
B.
C4H10
C.
C5H10
D.
C6H6
B. C4H10
Butane is a straight chain alkane composed of 4 carbon atoms. It has a role as a food propellant and a refrigerant. It is a gas molecular entity and an alkane.
Mass of C2H6 = 30.07 g/mol
Mass of C4H10 = 58.1222 g/mol
Mass of C5H10 = 70.1329 g/mol
Mass of C6H6 = 78.11184 g/mol
The mass of the empirical formula C6H6 is the greatest of all other compounds.
What is Molar mass?A chemical compound's molar mass is calculated by dividing its mass by the number of moles—measured in moles—that make up the sample of that compound. A substance's overall characteristics include its molar mass. The compound is present in many different forms, each with a different mass as a result of the isotopes. The molar mass is the average of these masses. The molar mass is most frequently calculated using the standard atomic weights and is a function of the relative abundance of the constituent atoms' isotopes on Earth. It is thus a terrestrial average. For converting between a substance's mass and its amount for large quantities, use the molar mass.To learn more about Molar mass, refer to:
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What is the percent by mass of a solution containing 4. 0g of solute in 100g of water? (Percent by mass formula: (mass of solute/mass of solution) x 100) A 40 % B. 3. 8 % 26 % D. 2. 1 %
What is required for a steady state reaction that is not required for an equilibrium reaction?.
Answer:
any thing going on within the organism its self- and is not unatural
Explanation:
A nitrogen bubble with a volume of 0.0050 mL forms in the joint of a scuba diver as she ascends rapidly from a pressure of 4.1 atm to the surface, with a pressure of 1.0 atm. What is the volume of the bubble at the surface
As the scuba diver ascends rapidly to the surface at the given pressure, the volume of the nitrogen bubble at the surface becomes 0.021mL.
Boyle's lawBoyle's law states that the volume V of a given quantity of gas is inversely proportional to its pressure P as long as temperature remains constant.
Boyle's law is expressed as;
P₁V₁ = P₂V₂
Where P₁ is Initial Pressure, V₁ is Initial volume, P₂ is Final Pressure and V₂ is Final volume.
Given the data in the question;
Initial volume; V₁ = 0.005mL = 5.0 × 10⁻⁶LInitial pressure; P₁ = 4.1atmFinal pressure; P₂ = 1.0atm Final volume; V₂ = ?We substitute our given values into the expression above to find the final volume.
P₁V₁ = P₂V₂
[tex]V_2 = \frac{P_1V_1}{P_2} \\\\V_2 = \frac{4.1atm \ *\ 5.0*10^{-6}L}{1.0atm}\\ \\V_2 = \frac{4.1 \ *\ 5.0*10^{-6}L}{1.0}\\\\V_2 = 2.05*10^{-6}L\\\\V_2 = 0.021mL[/tex]
Therefore, as the scuba diver ascends rapidly to the surface at the given pressure, the volume of the nitrogen bubble at the surface becomes 0.021mL.
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Are all molecules of ideal gas in motion with different velocities?
Explanation:
Individual gas molecules have different speeds. Collisions between these molecules can change individual molecular speeds, but this does not affect the overall average speed of the system.
The picture above shows a frying pan. Why are frying pans usually made out of metal?
Answer: The frying pan is made up of metals like aluminium or stainless steel as these metals are good conductor of heat.
Answer:
b. they are good conductors of heat
Explanation:
study island
The chemical equation below shows the formation of aluminum oxide (al2o3) from aluminum (al) and oxygen (o2). 4al 3o2 right arrow. 2al2o3 the molar mass of o2 is 32.0 g/mol. what mass, in grams, of o2 must react to form 3.80 mol of al2o3? 60.8 grams 81.1 grams 122 grams 182 grams
The mass of oxygen must react to form 3.80 mol of Al₂O₃ in the given reaction is 182 grams.
How do we calculate mass from moles?Mass of any substance will be calculated by using their moles as:
n = W/M, where
W = required mass
M = molar mass
Given chemical reaction is:
4Al + 3O₂ → 2Al₂O₃
From the stoichiometry of the reaction it is clear that,
2 moles of Al₂O₃ = obtained from 3 moles of O₂
3.80 moles of Al₂O₃ = obtained from 3/2×3.80=5.7 moles of O₂
Now we calculate the mass of oxygen of 5.7 moles as:
W = (5.7mol)(32g/mol) = 182.4 grams or 182g
Hence option (4) is correct.
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Answer: 182 grams
Explanation:
can someone pls help me
Answer:
the picture is blurd
Explanation:
60 points please help me i will appreciate it!
Answer:
[tex]\huge\boxed{\sf v = 62.7 \ L}[/tex]
Explanation:
Given Data:
Mole = n = 3.38 mol
Temp = t = 269 K
Pressure = 1.19 atm
Gas constant = R = 0.08206 L atm K⁻¹ mol⁻¹
Required:
Volume = v = ?
Formula:
Pv = nRT
Solution:
Rearranging formula
[tex]\displaystyle v = \frac{nRT}{P} \\\\v = \frac{(3.38)(0.08206)(269)}{1.19} \\\\v = \frac{74.6}{1.19} \\\\v = 62.7 \ L\\\\\rule[225]{225}{2}[/tex]
Oxidation reactions involve the loss of __________.
Answer:
Electrons
Explanation:
Lithium seems to have dramatic effects on the nervous system, yet our bodies seemingly never evolved to use lithium endogenously, rather focusing on sodium, potassium, and calcium. what is a plausible explanation for this?
Given its small size and high polarizing power, lithium is only involved in covalent rather than ionic bonds in the body as does sodium, potassium, and calcium.
What is lithium?Lithium is a metal and a member of group 1 in the periodic table. It is a very small ion hence it has a different chemistry from the rest of the members of the group.
Lithium is not part of any of the biomolecules because given its small size and high polarizing power, it is only involved in covalent rather than ionic bonds in the body as does sodium, potassium, and calcium.
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POSSIBLE POINTS:
I perform a Haber Process reaction and I get 10.0g of NH3, if I was theoretically supposed to get 15.7g, what is my percent yield?
O 63.69 %
O 60 %
O 63.7%
O 64 %
1
2
3
4
5
6
7
8
9
10
Answer:
63.7
Explanation:
Percent yield is actual yield over theoretical yield. In this case, 10/15.7 = .637 = 63.7%.
Which of the following compounds would be expected to have the strongest ionic bonds?
the compound that has the largest ions with the greatest charge
the compound that has the largest ions with the least charge
the compound that has the smallest ions with the greatest charge
the compound that has the smallest ions with the least charge
Answer:
the compound that has the smallest ions with the greatest charge
The compound that has the smallest ions with the greatest charge will have the strongest ionic bonds. Therefore, option C is correct.
What are ionic compounds?Ionic compounds can be defined as solids formed by closely packed ions of opposite charge. An Ionic compound is commonly formed when metal combines with non-metal.
In ionic compounds, the ions are held together by ionic bonds. The ions are created by accepting or losing electrons in order to get their nearest noble gas configuration. In a reaction, the metals have a tendency to lose electrons to complete their octet while non-metals will gain electrons to fill their octet.
An ionic bond or electrovalent bond is a type of linkage generated from the electrostatic attraction between oppositely charged ions. Such a bond produces when the valence electrons of one atom are transferred permanently to another.
The more the charge on the ions and the smaller the ions stronger the ionic bond will be formed.
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