Question 1

Vapor pressure can be described as

Accepted Answer

A) the pressure exerted by a gas above the surface of its liquid. 
B) the pressure within the lungs during inhalation. 
C) the pressure exerted on the Earth by the particles in the air. 
D) the temperature at which the vapor pressure of a liquid equals atmospheric pressure. 
E) the temperature at which bubbles of vapor appear in a liquid. 
A) the pressure exerted by a gas above the surface of its liquid. 
B) the pressure within the lungs during inhalation. 
C) the pressure exerted on the Earth by the particles in the air. 
D) the temperature at which the vapor pressure of a liquid equals atmospheric pressure. 
E) the temperature at which bubbles of vapor appear in a liquid. A

Question 2

The pressure of 5.0 L of gas increases from 1.50 atm to 1240 mmHg. What is the final volume of the gas, assuming no change in amount of gas or temperature?

Accepted Answer

A) 4.6 L 
B) 5.4 L 
C) 0.0060 L 
D) 5.0 L 
E) 4100 L 
A) 4.6 L 
B) 5.4 L 
C) 0.0060 L 
D) 5.0 L 
E) 4100 L A

Question 3

The volume occupied by a gas is directly proportional to

Accepted Answer

A) the pressure of the gas. 
B) the number of moles of gas in the sample. 
C) the Fahrenheit temperature of the gas. 
D) the Celsius temperature of the gas. 
E) the mass of the individual gas molecules. 
A) the pressure of the gas. 
B) the number of moles of gas in the sample. 
C) the Fahrenheit temperature of the gas. 
D) the Celsius temperature of the gas. 
E) the mass of the individual gas molecules. B

Question 4

The pressure exerted by the particles of vapor above a liquid is called the ________.

Accepted Answer

A) molar pressure 
B) atmospheric pressure 
C) barometric pressure 
D) standard pressure 
E) vapor pressure 
A) molar pressure 
B) atmospheric pressure 
C) barometric pressure 
D) standard pressure 
E) vapor pressure

Question 5

The boiling point of water at sea level is  
At higher altitudes, the boiling point of water will be

Accepted Answer

A)  higher, because the altitude is greater. 
B)  the same, because water always boils at   
C)  lower, because the atmospheric pressure is lower. 
D)  higher, because there are fewer water molecules in the air. 
E)  lower, because temperatures are lower. 
A)  higher, because the altitude is greater. 
B)  the same, because water always boils at   
C)  lower, because the atmospheric pressure is lower. 
D)  higher, because there are fewer water molecules in the air. 
E)  lower, because temperatures are lower.

Question 6

A barometer is a device for measuring ________.

Accepted Answer

A) atmospheric pressure 
B) blood pressure 
C) vapor pressure 
D) gas pressure in a container 
E) gas pressure in the lung 
A) atmospheric pressure 
B) blood pressure 
C) vapor pressure 
D) gas pressure in a container 
E) gas pressure in the lung

Question 7

Which of the following correctly describes the partial pressures of gases in the body?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 8

The volume of a sample of gas, initially at   and  158mL, increases to  450 mL. What is the final temperature of the sample of gas, if the pressure and amount of gas in the container is kept constant?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 9

Which of the following is NOT part of the kinetic theory of gases?

Accepted Answer

A) Gas particles move rapidly. 
B) There is very little empty space in a gas. 
C) Gas particles do not attract or repel one another. 
D) A gas is composed of very small particles. 
E) Gas particles move faster when the temperature increases. 
A) Gas particles move rapidly. 
B) There is very little empty space in a gas. 
C) Gas particles do not attract or repel one another. 
D) A gas is composed of very small particles. 
E) Gas particles move faster when the temperature increases.

Question 10

What volume would a  0.250  mole sample of     gas occupy, if it had a pressure of  1.70 atm, and a temperature of

Accepted Answer

A)   3.72 L 
B)   283 L 
C)   0.423 L 
D)   0.269 L 
E)   1.25 L 
A)   3.72 L 
B)   283 L 
C)   0.423 L 
D)   0.269 L 
E)   1.25 L

Question 11

The mathematical expression of the ideal gas law is

Accepted Answer

A)    
B)    
C)    
D)    
E)     
A)    
B)    
C)    
D)    
E)

Question 12

Which of the following correctly describes the process of inspiration (air entering the lungs)?

Accepted Answer

A) The lungs contract, causing their internal pressure to decrease. 
B) The lungs expand, causing their internal pressure to decrease. 
C) There is no change in the internal pressure in the lungs. 
D) The lungs contract, causing their internal pressure to increase. 
E) The lungs expand, causing their internal pressure to increase. 
A) The lungs contract, causing their internal pressure to decrease. 
B) The lungs expand, causing their internal pressure to decrease. 
C) There is no change in the internal pressure in the lungs. 
D) The lungs contract, causing their internal pressure to increase. 
E) The lungs expand, causing their internal pressure to increase.

Question 13

The temperature of a 500. mL sample of gas increases from 150. K to 350. K. What is the final volume of the sample of gas, if the pressure and amount of gas in the container is kept constant?

Accepted Answer

A) 0.0095 mL 
B) 0.0470 mL 
C) 1170 mL 
D) 210. mL 
E) 110. mL 
A) 0.0095 mL 
B) 0.0470 mL 
C) 1170 mL 
D) 210. mL 
E) 110. mL

Question 14

A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 K. What will be the gas pressure when the temperature changes to 450 K, at constant amount of gas and volume?

Accepted Answer

A) 1.1 atm 
B) 0.94 atm 
C) 1.5 atm 
D) 0.47 atm 
E) 2.1 atm 
A) 1.1 atm 
B) 0.94 atm 
C) 1.5 atm 
D) 0.47 atm 
E) 2.1 atm

Question 15

The relationship   is called

Accepted Answer

A)  Boyle's Law 
B)  Charles's Law 
C)  Gay-Lussac's Law 
D)  The Combined Gas Law 
E)  Avogadro's Law 
A)  Boyle's Law 
B)  Charles's Law 
C)  Gay-Lussac's Law 
D)  The Combined Gas Law 
E)  Avogadro's Law

Question 16

A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 330 mmHg and the partial pressure of the oxygen is 1.0 atm, what is the total pressure of the mixture in torr?

Accepted Answer

A) 1.4 torr 
B) 760 torr 
C) 430 torr 
D) 1100 torr 
E) 330 torr 
A) 1.4 torr 
B) 760 torr 
C) 430 torr 
D) 1100 torr 
E) 330 torr

Question 17

At STP, what is the volume of 1.00 mole of carbon dioxide?

Accepted Answer

A) 22.4 L 
B) 44.0 L 
C) 1.00 L 
D) 273 L 
E) 12.2 L 
A) 22.4 L 
B) 44.0 L 
C) 1.00 L 
D) 273 L 
E) 12.2 L

Question 18

What unit of temperature is used in gas law calculations?

Accepted Answer

A) either kelvin or degree Celsius 
B) either degree Celsius or degree Fahrenheit 
C) degree Celsius 
D) degree Fahrenheit 
E) kelvin 
A) either kelvin or degree Celsius 
B) either degree Celsius or degree Fahrenheit 
C) degree Celsius 
D) degree Fahrenheit 
E) kelvin

Question 19

A 5.00-L tank contains helium gas at 1.50 atm. What is the pressure of the gas in torr?

Accepted Answer

A) 760. torr 
B) 1140 torr 
C) 1.50 torr 
D) 507 torr 
E) 7.50 torr 
A) 760. torr 
B) 1140 torr 
C) 1.50 torr 
D) 507 torr 
E) 7.50 torr

Question 20

The relationship   is called

Accepted Answer

A)  Boyle's Law 
B)  Charles's Law 
C)  Gay-Lussac's Law 
D)  The Combined Gas Law 
E)  Avogadro's Law 
A)  Boyle's Law 
B)  Charles's Law 
C)  Gay-Lussac's Law 
D)  The Combined Gas Law 
E)  Avogadro's Law

Exam 8: Gases

Vapor pressure can be described as

The pressure of 5.0 L of gas increases from 1.50 atm to 1240 mmHg. What is the final volume of the gas, assuming no change in amount of gas or temperature?

The volume occupied by a gas is directly proportional to

The pressure exerted by the particles of vapor above a liquid is called the ________.

The boiling point of water at sea level is At higher altitudes, the boiling point of water will be

A barometer is a device for measuring ________.

Which of the following correctly describes the partial pressures of gases in the body?

The volume of a sample of gas, initially at and 158mL, increases to 450 mL. What is the final temperature of the sample of gas, if the pressure and amount of gas in the container is kept constant?

Which of the following is NOT part of the kinetic theory of gases?

What volume would a 0.250 mole sample of gas occupy, if it had a pressure of 1.70 atm, and a temperature of

The mathematical expression of the ideal gas law is

Which of the following correctly describes the process of inspiration (air entering the lungs)?

The temperature of a 500. mL sample of gas increases from 150. K to 350. K. What is the final volume of the sample of gas, if the pressure and amount of gas in the container is kept constant?

A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 K. What will be the gas pressure when the temperature changes to 450 K, at constant amount of gas and volume?

The relationship is called

A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 330 mmHg and the partial pressure of the oxygen is 1.0 atm, what is the total pressure of the mixture in torr?

At STP, what is the volume of 1.00 mole of carbon dioxide?

What unit of temperature is used in gas law calculations?

A 5.00-L tank contains helium gas at 1.50 atm. What is the pressure of the gas in torr?

The relationship is called

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