Question 1

A mole of any gaseous species occupies 22.4 L at standard temperature and pressure.

Accepted Answer

A) True 
 B)False

Question 2

Charles' Law states that, as the temperature of a gas increases under constant pressure, the volume of the gas will decrease.

Accepted Answer

A) True 
 B)False

Question 3

How many moles of an ideal gas are present in a 50.6 L sample at 35 ° C and 875 torr?

Accepted Answer

A)  1.95 mol 
B)  2.30 mol 
C)  4.63 mol 
D)  13.6 mol 
A)  1.95 mol 
B)  2.30 mol 
C)  4.63 mol 
D)  13.6 mol

Question 4

A 2.0 L vessel is filled with 7.3 × 10 − 2 mol hydrogen at 1.55 atm. What is the temperature of this gas?

Accepted Answer

A)  640 K 
B)  1200 K 
C)  520 K 
D)  2800 K 
A)  640 K 
B)  1200 K 
C)  520 K 
D)  2800 K

Question 5

The density (in g/L) of xenon (Xe) gas at 540 torr and 1150 K is:

Accepted Answer

A)  0.988 g/L 
B)  1.26 g/L 
C)  1.73 g/L 
D)  2.56 g/L 
A)  0.988 g/L 
B)  1.26 g/L 
C)  1.73 g/L 
D)  2.56 g/L

Question 6

A fertilizer manufacturer uses the reaction between hydrogen and nitrogen to create ammonia (assume no other reactants or products). If 9.5 × 103 moles of hydrogen and 1.7 × 103 moles of nitrogen react at 277 K and 1.25 atm, what volume of ammonia is produced?

Accepted Answer

A)  2.1 × 104 L 
B)  3.0 × 104 L 
C)  6.2 × 104 L 
D)  1.9 × 105 L 
A)  2.1 × 104 L 
B)  3.0 × 104 L 
C)  6.2 × 104 L 
D)  1.9 × 105 L

Question 7

VOCs play a role in the formation of ozone by reacting with photochemically activated nitrogen oxides.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following compounds is an EPA principal pollutant?

Accepted Answer

A)  O2 
B)  NO2 
C)  H2O 
D)  N2 
A)  O2 
B)  NO2 
C)  H2O 
D)  N2

Question 9

CO, NO2, O3, and SO2 are among the EPA's six principal criteria pollutants.

Accepted Answer

A) True 
 B)False

Question 10

During a manufacturer process, a pocket of gases at 250 ° C formed a bubble inside of a liquid mass. The bubble had a volume of 325 mL at the time of it's formation. What is the volume of this bubble now that the product is in a 20 ° C storage facility?

Accepted Answer

A)  26 mL 
B)  84 mL 
C)  117 mL 
D)  182 mL 
A)  26 mL 
B)  84 mL 
C)  117 mL 
D)  182 mL

Question 11

An argon gas sample has a mass of 1.9511 g and occupies a volume of 5.000 L at 20.0 ° C. What is the pressure of this gas?

Accepted Answer

A)  8.33 × 102 atm 
B)  0.316 atm 
C)  1.03 atm 
D)  0.234 atm 
A)  8.33 × 102 atm 
B)  0.316 atm 
C)  1.03 atm 
D)  0.234 atm

Question 12

What is the total pressure of a 20.0 L vessel at 30.0 ° C holding 11.6 g N2, 6.8 g O2, and 5.3 g of He?

Accepted Answer

A)  1.6 atm 
B)  2.0 atm 
C)  2.4 atm 
D)  3.2 atm 
A)  1.6 atm 
B)  2.0 atm 
C)  2.4 atm 
D)  3.2 atm

Question 13

Consider the commercial production of SO3 via sulfur dioxide and oxygen:
SO2 (g) + O2 (g) → SO3 (g)
If 5.3 L of sulfur dioxide and 4.7 L of oxygen are mixed, how much sulfur trioxide may be produced if all gases are at STP?

Accepted Answer

A)  5.3 L 
B)  6.1 L 
C)  10.0 L 
D)  21 L 
A)  5.3 L 
B)  6.1 L 
C)  10.0 L 
D)  21 L

Question 14

A motorist discovers that her auto tire measures 29.2 psi rather than the recommended 35 psi. If the tire's volume is assumed constant at 11.6 L and the temperature is 45F at the filling station, how many moles of air will the motorist need to add to bring the tire to 35 psi? (assume 1.00 atm = 14.7 psi)

Accepted Answer

A)  1.0 moles 
B)  1.2 moles 
C)  2.0 moles 
D)  2.4 moles 
A)  1.0 moles 
B)  1.2 moles 
C)  2.0 moles 
D)  2.4 moles

Question 15

For the gas molecules involved, increasing the energy of gas molecules results in:

Accepted Answer

A)  a temperature decrease 
B)  an increase in container wall collisions 
C)  a pressure decrease 
D)  a decrease in molecular collision frequency 
A)  a temperature decrease 
B)  an increase in container wall collisions 
C)  a pressure decrease 
D)  a decrease in molecular collision frequency

Question 16

If an angioplasty balloon has a volume of 0.85 cm3 and contains an inert gas mixture at 0.95 atm at room temperature (20 ° C), what is the resulting pressure of the balloon if the temperature is increased to 37 ° C and the volume reduced to 0.50 cm3?

Accepted Answer

A)  1.2 atm 
B)  1.1 atm 
C)  1.7 atm 
D)  1.0 atm 
A)  1.2 atm 
B)  1.1 atm 
C)  1.7 atm 
D)  1.0 atm

Question 17

As the temperature of a gas increases, the area under the Maxwell-Boltzmann distribution of molecular speeds curve:

Accepted Answer

A)  increases 
B)  remains the same 
C)  decreases 
D)  multiplies by a constant 
A)  increases 
B)  remains the same 
C)  decreases 
D)  multiplies by a constant

Question 18

What is the mass of 2.3 L of chlorine gas at STP?

Accepted Answer

A)  3.6 g 
B)  16.1 g 
C)  7.3 g 
D)  8.1 g 
A)  3.6 g 
B)  16.1 g 
C)  7.3 g 
D)  8.1 g

Question 19

Avagadro's Law states that the volume of a gas is inversely proportional to the number of molecules (or moles) of gas present.

Accepted Answer

A) True 
 B)False

Question 20

Assuming a constant temperature, the volume of a gas will ____ with an increase in pressure.

Accepted Answer

A)  increase 
B)  remain the same 
C)  decrease 
D)  fluctuate about the original mean 
A)  increase 
B)  remain the same 
C)  decrease 
D)  fluctuate about the original mean

A mole of any gaseous species occupies 22.4 L at standard temperature and pressure.

Charles' Law states that, as the temperature of a gas increases under constant pressure, the volume of the gas will decrease.

How many moles of an ideal gas are present in a 50.6 L sample at 35 ° C and 875 torr?

A 2.0 L vessel is filled with 7.3 × 10^{− 2} mol hydrogen at 1.55 atm. What is the temperature of this gas?

The density (in g/L) of xenon (Xe) gas at 540 torr and 1150 K is:

A fertilizer manufacturer uses the reaction between hydrogen and nitrogen to create ammonia (assume no other reactants or products). If 9.5 × 10³ moles of hydrogen and 1.7 × 10³ moles of nitrogen react at 277 K and 1.25 atm, what volume of ammonia is produced?

VOCs play a role in the formation of ozone by reacting with photochemically activated nitrogen oxides.

Which of the following compounds is an EPA principal pollutant?

CO, NO₂, O₃, and SO₂ are among the EPA's six principal criteria pollutants.

During a manufacturer process, a pocket of gases at 250 ° C formed a bubble inside of a liquid mass. The bubble had a volume of 325 mL at the time of it's formation. What is the volume of this bubble now that the product is in a 20 ° C storage facility?

An argon gas sample has a mass of 1.9511 g and occupies a volume of 5.000 L at 20.0 ° C. What is the pressure of this gas?

What is the total pressure of a 20.0 L vessel at 30.0 ° C holding 11.6 g N₂, 6.8 g O₂, and 5.3 g of He?

Consider the commercial production of SO₃ via sulfur dioxide and oxygen: SO₂ (g) + O₂ (g) → SO₃ (g) If 5.3 L of sulfur dioxide and 4.7 L of oxygen are mixed, how much sulfur trioxide may be produced if all gases are at STP?

For the gas molecules involved, increasing the energy of gas molecules results in:

If an angioplasty balloon has a volume of 0.85 cm³ and contains an inert gas mixture at 0.95 atm at room temperature (20 ° C), what is the resulting pressure of the balloon if the temperature is increased to 37 ° C and the volume reduced to 0.50 cm³?

As the temperature of a gas increases, the area under the Maxwell-Boltzmann distribution of molecular speeds curve:

What is the mass of 2.3 L of chlorine gas at STP?

Avagadro's Law states that the volume of a gas is inversely proportional to the number of molecules (or moles) of gas present.

Assuming a constant temperature, the volume of a gas will ____ with an increase in pressure.

Introduction to Chemistry

Atoms and Molecules

Molecules Moles Chemical Equations

Stoichiometry

The Periodic Table and Atomic Structure

Chemical Bonding and Molecular Structure

Molecules and Materials

Energy and Chemistry

Entropy and the Second Law of Thermodynamics

Chemical Kinetics

Chemical Equilibrium

Electrochemistry

Filters

Exam 5: Gases

A mole of any gaseous species occupies 22.4 L at standard temperature and pressure.

Charles' Law states that, as the temperature of a gas increases under constant pressure, the volume of the gas will decrease.

How many moles of an ideal gas are present in a 50.6 L sample at 35 ° C and 875 torr?

A 2.0 L vessel is filled with 7.3 × 10 − 2 mol hydrogen at 1.55 atm. What is the temperature of this gas?

The density (in g/L) of xenon (Xe) gas at 540 torr and 1150 K is:

A fertilizer manufacturer uses the reaction between hydrogen and nitrogen to create ammonia (assume no other reactants or products). If 9.5 × 103 moles of hydrogen and 1.7 × 103 moles of nitrogen react at 277 K and 1.25 atm, what volume of ammonia is produced?

VOCs play a role in the formation of ozone by reacting with photochemically activated nitrogen oxides.

Which of the following compounds is an EPA principal pollutant?

CO, NO2, O3, and SO2 are among the EPA's six principal criteria pollutants.

During a manufacturer process, a pocket of gases at 250 ° C formed a bubble inside of a liquid mass. The bubble had a volume of 325 mL at the time of it's formation. What is the volume of this bubble now that the product is in a 20 ° C storage facility?

An argon gas sample has a mass of 1.9511 g and occupies a volume of 5.000 L at 20.0 ° C. What is the pressure of this gas?

What is the total pressure of a 20.0 L vessel at 30.0 ° C holding 11.6 g N2, 6.8 g O2, and 5.3 g of He?

Consider the commercial production of SO3 via sulfur dioxide and oxygen: SO2 (g) + O2 (g) → SO3 (g) If 5.3 L of sulfur dioxide and 4.7 L of oxygen are mixed, how much sulfur trioxide may be produced if all gases are at STP?

For the gas molecules involved, increasing the energy of gas molecules results in:

If an angioplasty balloon has a volume of 0.85 cm3 and contains an inert gas mixture at 0.95 atm at room temperature (20 ° C), what is the resulting pressure of the balloon if the temperature is increased to 37 ° C and the volume reduced to 0.50 cm3?

As the temperature of a gas increases, the area under the Maxwell-Boltzmann distribution of molecular speeds curve:

What is the mass of 2.3 L of chlorine gas at STP?

Avagadro's Law states that the volume of a gas is inversely proportional to the number of molecules (or moles) of gas present.

Assuming a constant temperature, the volume of a gas will ____ with an increase in pressure.

Introduction to Chemistry

Atoms and Molecules

Molecules Moles Chemical Equations

Stoichiometry

The Periodic Table and Atomic Structure

Chemical Bonding and Molecular Structure

Molecules and Materials

Energy and Chemistry

Entropy and the Second Law of Thermodynamics

Chemical Kinetics

Chemical Equilibrium

Electrochemistry

Filters

A 2.0 L vessel is filled with 7.3 × 10^{− 2} mol hydrogen at 1.55 atm. What is the temperature of this gas?

A fertilizer manufacturer uses the reaction between hydrogen and nitrogen to create ammonia (assume no other reactants or products). If 9.5 × 10³ moles of hydrogen and 1.7 × 10³ moles of nitrogen react at 277 K and 1.25 atm, what volume of ammonia is produced?

CO, NO₂, O₃, and SO₂ are among the EPA's six principal criteria pollutants.

What is the total pressure of a 20.0 L vessel at 30.0 ° C holding 11.6 g N₂, 6.8 g O₂, and 5.3 g of He?

Consider the commercial production of SO₃ via sulfur dioxide and oxygen: SO₂ (g) + O₂ (g) → SO₃ (g) If 5.3 L of sulfur dioxide and 4.7 L of oxygen are mixed, how much sulfur trioxide may be produced if all gases are at STP?

If an angioplasty balloon has a volume of 0.85 cm³ and contains an inert gas mixture at 0.95 atm at room temperature (20 ° C), what is the resulting pressure of the balloon if the temperature is increased to 37 ° C and the volume reduced to 0.50 cm³?