What is the ratio of ammonia if the chemical formula is
NH3

Answers

Answer 1

Explanation:

The chemical formula NH3 represents ammonia, a colorless gas that is widely used in various industrial and household applications. The formula indicates that one molecule of ammonia contains one nitrogen atom and three hydrogen atoms. Therefore, the ratio of nitrogen to hydrogen in ammonia is 1:3.

This means that for every one nitrogen atom in an ammonia molecule, there are three hydrogen atoms. Alternatively, we can say that the ratio of nitrogen atoms to hydrogen atoms in ammonia is 1:3.


Related Questions

A buffer solution is made using weak acid, HA, with a pKa of 6.98. If the ratio of [A-] to [HA] is 1.0 x 10^3, what is the pH of the buffer

Answers

The Henderson-Hasselbalch equation can be used to calculate the pH of a buffer solution. The equation is:

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

In this case, the pKa of HA is 6.98, and the ratio of [A-] to [HA] is 1.0 x 10^3. Plugging in these values, we get:

pH = 6.98 + log(1.0 x 10^3)

pH = 9.98

Therefore, the pH of the buffer solution is 9.98.
yes the answer above is correct

L 4.4.2 Test (CST): Electricity and Energy Resources
Question 11 of 25
What happens to the field lines of two positive charges as the charges are
brought close together?
A. The field lines are attracted to the other charge.
B. The field lines cross together.
C. It would depend on what kind of positive charges they are.
D. The field lines bend away from the other charge.
SUBMIT

Answers

Answer:

D

Explanation:

because replusive force is much more

. An IV solution contains 0.0175% of Drug Z, how much of this IV solution should we infuse, if the patient needs 100 mg of Drug Z?
If this solution is infusing at 50 ml/hr, how long will it take take to complete the infusion? Hint: 1mg = 0.001g or ml.

Answers

The infusion will be finished in 114.286 hours.

We need to infuse 100 mg of Drug Z. Since the IV solution contains 0.0175% of Drug Z, we can calculate the amount of IV solution needed for the infusion.

To do this, we need to use the following formula:

Amount of IV solution = [tex]\frac{(Amount of Drug Z * 100) }{ Concentration of Drug Z}[/tex]

Amount of IV solution = [tex]\frac{(100 mg * 100) }{0.0175 \% }[/tex]

Amount of IV solution = 5,714.286 ml

To calculate how long it will take to complete the infusion, we need to use the following formula:

Time to complete infusion =[tex]\frac{Amount of IV solution }{ Rate of infusion }[/tex]

Time to complete infusion =[tex]\frac{ 5,714.286 ml }{ 50 ml/hr }[/tex]

Time to complete infusion = 114.286 hr

Therefore, it will take 114.286 hours to complete the infusion.

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Which orbital diagram represents lithium
(atomic number = 3)?​

Answers

Answer:

A.

Explanation:

Lithium's electron configuration is 1s^2 and 2s^1 , therefore the orbital diagram would have 2 in 1s box and 1 in 2s box.

Lithium's electron configuration is 1s^2 and 2s^1 , therefore the orbital diagram would have 2 in 1s box and 1 in 2s box. Thus, option A is correct.

An atom in the neutral state has the same number of protons and electrons. Since protons carry the positive charge and electrons carry negative charge of equal magnitude as that of protons, so, in neutral state the overall charge on the atom is zero.

Atomic number of Lithium is 3. Under neutral state it has 3 protons and 3 electrons. So, its overall electric charge is 0.

If an atom of Lithium loses one of its outermost electron, it is left with 2 electrons and 3 protons. Since, number of protons is 1 more than the number of electrons, the electrical charge on Lithium atom would be positive and the magnitude of charge will be equal to the number of electrons lost, which is 1 in this case.

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A 25.0 kg iron weight lifting plate has a volume of 3180 cm3 . what is the density of the iron plate in g/cm3?

Answers

Answer:

The density of a substance is given by dividing the mass by the volume.

The S.I units of density are kg/m³, but can be measured by other units such as g/cm³

The mass of the iron is 29 kg or 29000 g

Therefore; Density = 29000 g/ 3680 cm³

                              = 7.880 g/cm³

Hence, the density of the iron plate is 7.880 g/cm³

Explanation:

What is the percent of O in
Ca(С2H302)2?
(Ca = 40.08 g/mol, C = 12.01 g/mol,
H= 1.01 g/mol, O = 16.00 g/mol)

Answers

40.5%

Explanation:

Ca×1 = 40

C×4 = 48

H×6 = 6

O×4 = 64

64÷158×100% = 40.5%

Ten years ago, a vacant lot in a subdivision was purchased for $30,500. The owner hired a general contractor to build a home on the lot. The contractor charged $375,000. The homeowner is planning to refinance the mortgage. The bank recently appraised the home at $410,000. What is the value of the property?

Answers

The value of the property at the end of the given time period is determined as $410,000.

What is the value of the property?

The value of the property is the sum of the purchase price of the lot and the cost of building the home, which is:

$30,500 (purchase price of the lot) + $375,000 (cost of building the home) = $405,500

However, the bank has appraised the home at $410,000, which means that the value of the property has increased by $4,500.

Therefore, the value of the property is:

$405,500 (original value) + $4,500 (increase in value) = $410,000.

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Answer ASAP Pleeeeease

Question
Which statement about fossil fuels is true?
Responses

They are an alternative energy source.

They are replaced in only a few years.


They are in high demand.

Answers

Answer:

They are in high demand.

Why is fossil fuel bad?

FOSSIL FUELS, USES, NEGATIVE IMPACTS AND SOLUTIONS;

In order to understand why it is bad to use Fossil Fuels, it is first necessary to understand what they are composed of. There are two main types of Fossil Fuels, namely, Coal and Oil.

The Formation of Coal : -

The multistage process that produces coal.

Many millennia ago, tree trunks fell and were quickly covered in water and mud. The bacteria, respiring anaerobically, due to the lack of Oxygen, produced peat. As is illustrated in stage 3, sediments built up over this peat layer and with time, heat and pressure, certain chemical changes turned the peat into Coal, as shown in stage 4. During the compression process, Sulphur compounds leached into the peat layer and eventually became a components of the final Coal.   In other cases,  Low sulfur coals derive their sulfur mainly from the sulfur components in the coal-forming plants. High-sulfur Coals, however, are now known to derive most of their sulfur from reduction of Sulphate ions to H2S in sea or brackish water in the coal beds by microbial processes.>

The Formation of Oil : -

The multistage process that produces oil.

Oil is essentially the remains of small fossilised sea creatures, that has been compressed and undergone pressures, eventually converted to oil. Oil is commonly accompanied by Natural Gas, which also builds up as a result of the extreme pressures. Sulphur is also found to make a percent of the oil.

The Usage and Combustion of Fossil Fuels : -

Coal and Oil are combusted to convert the chemical energy held to thermal energy, which in turn warms up water so that steam evolves. This team is drafted down a tunnel to turn a turbine, which drives a generator. This is how a power station works.

Upon observing the figure above, if you follow the path of the process, we see that coal enters at number 14 and enters the combuster at number 15. Here, it burns to heat the water at number 19, which is channeled down to drive the generator at number 5, via a series of tubes which converge into one, at number 10.

Coal or Oil or both can be used for this purpose. However the combustion of Coal and Oil releases Sulphur gas, which is dangerous for the Environment, as well as Carbon Dioxide and Carbon Monoxide, as the combustion happens in internal conditions, hence combustion may not occur fully, or in depleted Oxygen.

Negative Impacts of Sulphur Gas, Carbon Monoxide and Carbon Dioxide on the Atmosphere and the Environment : -

Sulphur Gas can dissolve in rainwater to produce a weak, aqueous Sulphuric Acid, which can fall in the form of rain. This can increase the pH of the soil or other water bodies, which can disturb marine ecosystems and even terrarial ones. It can fall on leafs and ‘wound’ them, i.e, destroy tissue due to its corrosive nature, making the plant life vulnerable to pathogens.Carbon Monoxide is a toxic gas that can cause suffocation and death. Although it is a natural component of the Atmosphere, in recent years, due to high industrial activity, its percent composition has increased significantly, which is a cause of concern towards the health of bird life. While it does not cause Greenhouse Effect directly, in the upper reaches of the Atmosphere it can combine with Oxygen to give Carbon Dioxide.…Which brings us to Carbon Dioxide. This is a greenhouse gas. On Earth, all organisms respire to produce Carbon Dioxide, so in the geological history of Earth, there has been equilibrium maintained between Oxygen and Carbon Dioxide in the Atmosphere. This, however, has been disturbed by Man’s industrial activities. This has been due to the high deforestation and lack of replacement of cut-down trees, around the planet. This disequilibrium is best depicted by the graph below.

Prevention and Reduction of These Effects : -

There are numerous methods by which these gases and their effects can be subdued. One notable example for the case of Sulphur Gas, is the “Flue Desulphurisation Method”, which effectively removes the Sulphur and separates it out, hence making it available for use in other Industrial Processes, but in safer compounds, etc.

Replanting of cut down trees can contribute towards of the re-achievement of the equilibrium that has been present in the Atmosphere before Industrial activities led to disequilibrium. Re-planting is a very simple process, but one that can go a long way. In effect, it is a two in one solution, as if we remove Carbon Monoxide emissions by reacting the gas with excess Oxygen, we get Carbon Dioxide. However, the equilibrium in the Biosphere means that is no longer a problem. Thus, replanting of trees is very important.

On a distance time graph of an objects motion distance is usually what

Answers

On a distance-time graph, the vertical axis represents distance traveled by an object, while the horizontal axis represents time. Therefore, the distance traveled by the object is usually represented by the vertical axis, with distance increasing as you move up the axis. The slope of the line on the graph represents the object's speed or velocity.

So, the distance traveled by the object is usually represented by the distance axis on the graph.

When 25 mL of 1.0M H₂SO4 is added to 50 mL of 1.0 M NaOH at 25°C in a calorimeter,
the temperature of the aqueous solution increases to 33.9 °C. Assuming that the specific
heat of the solution is 4.18 J/g°C, that its density is 1.00/mL, and that the calorimeter
itself absorbs a negligible amount of heat, calculate the amount of heat absorbed for the
reaction.

Answers

Answer: The amount of heat absorbed for the reaction of 25 mL of 1.0 M H₂SO4 and 50 mL of 1.0 M NaOH, resulting in a temperature increase from 25°C to 33.9°C, is 10.14 kJ.

Explanation:

42 grams of nitrogen gas react with
13 grams of hydrogen gas. What is the
limiting reactant and how many grams of
ammonia will be produced?
N2 + 3H22NH3
A) H2; 74 grams NH3 produced
B) H2; 4.3 grams NH3 produced
C) N2; 3.0 grams NH3 produced
D) N2; 51 grams NH3 produced

Answers

Answer:

d

Explanation:

Nitrogen is the limiting reactant.

42 g N2x (1mole N2/28 g N2) X (2 moles NH3/ 1mole N2) X (17 grams NH3/1mole NH3) = 51 g

13 g H2 x (1 mole H2/2 g H2) X (2 moles NH3/3moles H2) X (17 g NH3/1mole NH3) =73.66g

since 51 is smaller than 73.66 and it started with N2 that is why N2 is the limiting reactant)

which statement describes density? Check all that apply

Density is a chemical property of an object.

The density of an object is constant.

Density is a derived unit of measure.

Density is the sum of the mass and volume of an object.

The density of an object determines whether it will sink or float.

Answers

Answer:

The density of an object is constant.

Density is a derived unit of measure.

The density of an object determines whether it will sink or float.

Which of the following is already in its empirical formula?
-C22H34O10
-C6H6
-C6H1203
-C5H1202
-none of these

Answers

These substances C6H1203 don't already exist in their empirical formula.

How can the empirical formula in MCQS be found?

The empirical formula is CH for both C2H2 and C2H6, as it represents the simplest whole number ratio of the various atoms in a molecule. The compound's molar mass is 314 g/mol, and the empirical formula mass is (2 X 12) + 1 + 80 = 105g. Hence, C6H3Br3 is the molecular formula.

What are C6H12O6 and C6H6's empirical formulas?

Glucose has the chemical formula C6H12O6 = 6 x CH2O c.The molecular weight of glucose is 180 g/mol.. The empirical and molecular formulas are identical because it equals 6 x 30 g/mol.

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What's absolute zero?
A. The temperature at which all liquids freeze
B. The temperature at which water freezes
C. The coldest temperature ever recorded in nature on Earth
D. The temperature at which all molecular motion is stopped

Answers

Answer:

D. The temperature at which all molecular motion is stopped.Explanation:

Absolute zero is the theoretical temperature at which all matter would have zero thermal energy and all molecular motion would stop. This temperature is equal to -273.15 degrees Celsius or -459.67 degrees Fahrenheit. It is the lowest possible temperature in the universe and cannot be reached in practice, as it is impossible to completely eliminate all thermal energy from matter.

D
objects(with a temp of absolute zero)
molecular motion stop.
And it can’t be A because helium remains a liquid even past zero.
Even though water does freeze in absolute zero the best possible answer is D.

Zinc reacts with hydrochloric acid according to the reaction equation
Zn(s) + 2 HCl(aq) → ZnCl₂(aq) + H₂(g)
How many milliliters of 1.50 M HCl(aq) are required to react with 5.05 g Zn(s)?
volume: ___ mL

Answers

Answer:

many milliliters of 1.50 M HCl(aq) are required to react with 5.05 g Zn(s)?

volume: 16 mL

First, we need to calculate the number of moles of Zn:

m(Zn) = 5.05 g

M(Zn) = 65.38 g/mol (molar mass of Zn)

n(Zn) = m(Zn) / M(Zn) = 5.05 g / 65.38 g/mol = 0.0773 mol

According to the balanced chemical equation, 1 mole of Zn reacts with 2 moles of HCl. Therefore, the number of moles of HCl needed is:

n(HCl) = 2 × n(Zn) = 2 × 0.0773 mol = 0.1546 mol

Now we can use the molarity of the HCl solution to calculate the volume needed:

M(HCl) = 1.50 mol/L

n(HCl) = V(HCl) × M(HCl)

V(HCl) = n(HCl) / M(HCl) = 0.1546 mol / 1.50 mol/L = 0.103 L = 103 mL

Therefore, we need 103 mL of 1.50 M HCl(aq) to react with 5.05 g Zn(s).

The pressure of compressed air that occupies 2 L is 30.0 atm. What will be the new volume of the gas if the pressure is reduced to 10.0 atm if the temperature is not allowed to change? Ty in advance!​

Answers

Answer:

To solve this problem, we can use the Boyle's Law equation, which states that the pressure and volume of a gas are inversely proportional at constant temperature.

Boyle's Law: P1V1 = P2V2

where P1 and V1 are the initial pressure and volume, and P2 and V2 are the new pressure and volume.

Using the given values:

P1 = 30.0 atm

V1 = 2 L

P2 = 10.0 atm

Substituting these values into the Boyle's Law equation, we get:

30.0 atm x 2 L = 10.0 atm x V2

Simplifying and solving for V2, we get:

V2 = (30.0 atm x 2 L) / 10.0 atm

V2 = 6 L

Therefore, the new volume of the gas will be 6 L if the pressure is reduced to 10.0 atm, assuming the temperature remains constant.

I Hope This Helps!

cyclohexene and sulfric acid reaction

Answers

Cyclohexene and sulfuric acid can react to form a cyclic carbonium ion intermediate, which can then undergo various reactions.

What is the product of the reaction?

One common reaction is the addition of a nucleophile, such as water or an alcohol, to form an alcohol product. This reaction is often referred to as acid-catalyzed hydration.

The general reaction mechanism can be summarized as follows:

Protonation of the alkene: The sulfuric acid protonates the alkene double bond, creating a more electrophilic carbocation intermediate.

Formation of a cyclic carbonium ion: The positive charge is then delocalized throughout the cyclohexene ring, forming a cyclic carbonium ion intermediate.

Addition of a nucleophile: A nucleophile, such as water, can then attack the carbon atom of the carbonium ion, forming a new bond and creating an alcohol product.

The overall reaction can be written as follows:

Cyclohexene + H2SO4 + H2O → Cyclohexanol + HSO4-

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calculate the mole fraction of HCl in a 9.8% (by mass) aqueous solution. the density of the solution is 1.03 g/mL

Answers

The mole fraction of HCl in the given solution is 0.051.

What is the mole fraction of the HCL?

To calculate the mole fraction of HCl in the given solution, we need to first find the mass of HCl and water present in the solution.

Let's assume we have 100 g of the solution, so 9.8 g of it is HCl, and 90.2 g is water.

Next, we need to find the moles of HCl present in the solution.

To do this, we divide the mass of HCl by its molar mass.

The molar mass of HCl is 36.46 g/mol (1.01 g/mol for hydrogen + 35.45 g/mol for chlorine).

moles of HCl = 9.8 g / 36.46 g/mol = 0.269 mol

The moles of water can be calculated using its molar mass which is 18.015 g/mol.

moles of water = 90.2 g / 18.015 g/mol = 5.005 mol

The total number of moles in the solution is the sum of the moles of HCl and water.

total moles = 0.269 mol + 5.005 mol = 5.274 mol

The mole fraction of HCl can now be calculated by dividing the moles of HCl by the total number of moles.

mole fraction of HCl = 0.269 mol / 5.274 mol = 0.051

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Consider the reaction for the formation of aluminum oxide from aluminum and oxygen.


4Al(s)+3O2(g)⟶2Al2O3(s)Δ1


Express the enthalpy of the following reaction, Δ2,

in terms of Δ1.


2Al2O3(s)⟶4Al(s)+3O2(g)Δ2


Express the enthalpy of the following reaction, Δ3,

in terms of Δ1.


12Al(s)+9O2(g)⟶6Al2O3(s)Δ3


Express the enthalpy of the following reaction, Δ4,

in terms of Δ1.


2Al(s)+32O2(g)⟶Al2O3(s)Δ4

Answers

To solve for Δ2, we need to reverse the reaction and change the sign of Δ1:

2Al2O3(s)⟶4Al(s)+3O2(g)Δ2 = -Δ1

Therefore, Δ2 = -Δ1.

To solve for Δ3, we need to add the reactions for the formation of two moles of Al2O3 from aluminum and oxygen:

4Al(s)+3O2(g)⟶2Al2O3(s)Δ1

2Al2O3(s)⟶4Al(s)+3O2(g)Δ3

Adding these equations gives:

12Al(s)+9O2(g)⟶6Al2O3(s)Δ3

Therefore, Δ3 = 2Δ1.

To solve for Δ4, we need to divide the reaction for the formation of two moles of Al2O3 by two:

2Al(s)+3O2(g)⟶Al2O3(s)Δ1/2

Multiplying this equation by 16 gives:

32Al(s)+48O2(g)⟶16Al2O3(s)8Δ1/2

We can then cancel out the formation of 14 moles of Al2O3:

2Al(s)+32O2(g)⟶Al2O3(s)Δ4 = 8Δ1/2 - 7Δ1

Therefore, Δ4 = 8Δ1/2 - 7Δ1.

What type of intermolecular force will for between H2O AND CH3OH? Draw and label a picture of this bond. Explain in words how this bond forms.

Answers

Hydrogen bonding, which is unquestionably what we have, will occur from the intermolecular force between the molecules of H2O and CH3OH. Atoms trade or exchange valence electrons to create bonds.

How come we create bonds?

Trust and self-esteem are developed in children and adolescents through strong emotional ties. After that, they can leave the family and establish wholesome friendships and other types of social ties. Healthy relationships consequently lower a child's chances of emotional discomfort or antisocial behaviour.

What exactly is a bonds, for example?

The government of a country issues government bonds, a sort of fixed-interest bond. These bonds are thought of as low-risk investments. Examples of different kinds of government bonds include T - bills, Municipality Bond, Zero-Coupon Bonds, and others.

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5. Use the formula that states the mass-to-volume ratio of a substance to solve the following:

(a) what is the density of a substance that has a mass of 7.9 g and a volume of 4.3 cm³?

(b) what is the mass of a substance that has a density of 8.9 g/cm³ and a volume of 5 cm³?

(c) what is the volume of a substance that has a density of 1.25 g/mL and a mass of 150 g?

Answers

Answer:

Explanation:

Part A

Density equals mass divided by volume. The units for density are g/cm³ or g/mL. Note that 1 cm³ = 1 mL.

d = m/v

Substitute the mass and the volume into the equation and then divide the bottom number into the top number.

d = 7.9 g/4.3 cm³ = 1.8 g/cm³

Part B

The density of a substance can be used as a conversion factor to find either the mass of the substance or the volume of the substance.

5 cm³ x 8.9 g/cm³ = 45 g

Note that cm³ units cancel and you are left with grams.

Part C

We will use the density of the substance to find the volume of the substance.

150 g x 1 mL/1.25 g = 120 mL

Note that you can invert density so the units of g cancel and you are left with mL.

Circle the larger one of each pair or grouping below:
Cr²+ or Cr3
Ge, Br, Ca, or Ga

Answers

(1) The larger ion is Cr³+

(2) The larger ion is Ca.

What is the size of the ions?

In the first pair, we are comparing the cations Cr²⁺ and Cr³⁺. Cations are positively charged ions that form when an atom loses one or more electrons. The charge on a cation tells you how many electrons it has lost. In this case, Cr²⁺ has lost 2 electrons, while Cr³⁺ has lost 3 electrons.

When comparing the sizes of ions, we need to consider the ionic radius. The ionic radius is the distance between the nucleus of an ion and its outermost electron shell.

As we move from left to right across the periodic table, the number of protons in the nucleus increases, which pulls the electrons closer to the nucleus and makes the atoms smaller. As we move down a column in the periodic table, the number of electron shells increases, which makes the atoms larger.

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The volume of a gas is 200 mL at 350.0 kPa pressure. What will the volume be when the pressure is reduced to 125.0 kPa, assuming the temperature remains constant.

Answers

The volume of the gas will be 560 mL when the pressure is reduced to 125.0 kPa, assuming the temperature remains constant.

What will be the volume of the gas when the pressure is reduced to 125.0 kPa?

Boyle's law simply states that "the volume of any given quantity of gas is inversely proportional to its pressure 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.

Substituting the given values, we get:

P₁ = 350.0 kPa (initial pressure)

V₁ = 200 mL (initial volume)

P₂ = 125.0 kPa (final pressure)

V₂ = ?

Solving for V₂, we get:

V₂ = ( P₁ × V₁ ) / P₂

V₂ = (350.0 kPa × 200 mL) / 125.0 kPa

V₂ = 560 mL

Therefore, the final volume of the gas is  560 mL.

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How many moles of MgS are in 100.g MgS?

Answers

The number or amount of moles of magnesium sulfide in 100g of MgS is 1.774 moles.

How to calculate number of moles?

The number of moles in a substance can be calculated by dividing the mass of the substance by its molar mass as follows:

Mole is the base unit of amount of substance i.e. the amount of substance of a system which contains exactly 6.02214076 × 10²³ elementary entities.

no of moles = mass ÷ molar mass

According to this question, 100g of magnesium sulfide is given. The molar mass of magnesium sulfide is 56.38 g/mol.

moles = 100g ÷ 56.38g/mol

moles = 1.774 moles

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Which of the following could be a useful IPM monitoring strategy to reduce crop damage from pests?

A.mating disruption devices B.noisemakers C.pesticides D.forecasting software

Answers

Answer:

C. pesticides

Explanation:

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What happens to the solubility of gases in water as pressure increases?

Question 9 options:

solubility increases so less solute dissolves


solubility decreases so more solute dissolves


solubility increases so more solute dissolves


solubility decreases so less solute dissolves

Answers

Answer: Solubility increases so more solute dissolves

Explanation:

The solubility is a measure of the concentration of the dissolved gas particles in the liquid and is a function of the gas pressure. As you increase the pressure of a gas, the collision frequency increases and thus the solubility goes up, as you decrease the pressure, the solubility goes down.

50 points
Problem 1. What masses of 15% and 20% solutions are needed to prepare 200 g of 17% solution?
Problem 2. What masses of 18% and 5% solutions are needed to prepare 300 g of 7% solution?
Problem 3. 200 g of 15% and 350 g of 20% solutions were mixed. Calculate mass percentage of final solution.
Problem 4. 300 g of 15% solution and 35 g of solute were mixed. Calculate mass percentage of final solution.
Problem 5. 400 g of 25% solution and 150 g of water were mixed. Calculate mass percentage of final solution.

Answers

80 g of 15% solution and 120 g of 20% solution are needed to prepare 200 g of 17% solution.

What is Mass Percentage?

Mass percentage is the percentage of the mass of the solute in a solution to the total mass of the solution. It is calculated by dividing the mass of the solute by the total mass of the solution and multiplying by 100%. The mass percentage is often used in chemistry to express the concentration of a solution.

Let x be the mass of the 15% solution needed and y be the mass of the 20% solution needed to prepare 200 g of 17% solution. Then we have the system of equations:

x + y = 200 (total mass of the solution)

0.15x + 0.20y = 0.17(200) (total amount of solute in the solution)

Solving for x and y, we get:

x = 80 g of 15% solution

y = 120 g of 20% solution

Therefore, 80 g of 15% solution and 120 g of 20% solution are needed to prepare 200 g of 17% solution.

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In the reaction NH3(g) + O2(g) → NO(g) + H₂O(g) How many grams of H₂0 are generated when 1.54 moles of NH3 react?​

Answers

Answer: 2.31 mole H2O

Explanation: blance the equation first

4 NH3 +   5O2   --> 4 NO + 6 H20

1.54 moles NH3 x ( 6 mole H20/ 4 moles NH3) X (18 g H20/1mole H20)

2.31 mole H20

How many moles of MgS are in 1.00g MgS?

Answers

Answer:

24.31 g/mol.

Explanation:

moles =mass/molar mass

n=w/m

Number 5 please.
Show work.

Answers

Mr Clink has the genotype IOIO

Mrs Clink has genotype IOIA

The child can not belong to them because the IAIB genotype is not in the Punnet square shown

What is genotype?

Genotype refers to the genetic makeup of an organism, specifically the combination of alleles (different versions of genes) inherited from its parents. It determines the traits that an organism will express, including physical characteristics, behavioral traits, and susceptibility to certain diseases.

The mother's genotype in question 2 is IOIO

The father's genotype is IAIB

The baby belongs to them because it is possible from the Punnet square shown

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