Question 1

As the temperature of a gas increases, the density of the gas will

Accepted Answer

A) increase. 
B) decrease. 
C) remain constant. 
A) increase. 
B) decrease. 
C) remain constant.

Question 2

A tank contains a mixture of helium, neon, and argon gases. If the total pressure in the tank is 490. mmHg and the partial pressures of helium and argon are 215 mmHg and 102 mmHg, respectively, what is the
Partial pressure of neon?

Accepted Answer

A) 377 mmHg 
B) 173 mmHg 
C) 603 mmHg 
D) 0.228 mmHg 
E) 807 mmHg 
A) 377 mmHg 
B) 173 mmHg 
C) 603 mmHg 
D) 0.228 mmHg 
E) 807 mmHg

Question 3

A sample of helium gas at   and  3.60 atm pressure is cooled in the same container to a temperature of  What is the new pressure, if volume and amount of gas do not change?

Accepted Answer

A)   5.40 atm 
B)   2.40 atm 
C)   2.38 atm 
D)   3.12 atm 
E)   4.15 atm 
A)   5.40 atm 
B)   2.40 atm 
C)   2.38 atm 
D)   3.12 atm 
E)   4.15 atm

Question 4

At STP, the molar volume of a gas is ________.

Accepted Answer

The answer of At STP, the molar volume of a...

Question 5

The ideal gas law is usually written as ________.

Accepted Answer

The answer of The ideal gas law is usually written...

Question 6

In the kinetic molecular theory of gas behavior, the distance between gas molecules is assumed to be ________ the diameter of the gas molecules.

Accepted Answer

A) approximately the same as 
B) 22.4 times 
C) large relative to 
D) dependent on 
E) small relative to 
A) approximately the same as 
B) 22.4 times 
C) large relative to 
D) dependent on 
E) small relative to

Question 7

When the combined gas law is rearranged to solve for   the following is the correct expression:

Accepted Answer

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

Question 8

Which of the following is NOT a potential use for a hyperbaric chamber?

Accepted Answer

A) counteracting carbon monoxide poisoning 
B) treating a diver with the bends 
C) treating some cancers 
D) treatment for burns and infections 
E) increasing the rate at which a broken bone heals 
A) counteracting carbon monoxide poisoning 
B) treating a diver with the bends 
C) treating some cancers 
D) treatment for burns and infections 
E) increasing the rate at which a broken bone heals

Question 9

The atmospheric pressure in Denver, CO is 633 mmHg. What is this pressure in atm?

Accepted Answer

A) 1.00 atm 
B) 633 atm 
C) 127 atm 
D) 1.20 atm 
E) 0.833 atm 
A) 1.00 atm 
B) 633 atm 
C) 127 atm 
D) 1.20 atm 
E) 0.833 atm

Question 10

At 570. mm Hg and   a gas sample has a volume of  2270 mL. What is the final pressure (in mmHg) at a volume of  1250 mL and a temperature of   if the amount of gas does not change?

Accepted Answer

A)  690. mmHg 
B)   1560 mmHg 
C)   700 . mmHg 
D)   470 . mmHg 
E)  210.  mmHg 
A)  690. mmHg 
B)   1560 mmHg 
C)   700 . mmHg 
D)   470 . mmHg 
E)  210.  mmHg

Question 11

An autoclave is used to sterilize surgical equipment because

Accepted Answer

A)  it allows water to boil at temperatures above   
B)  it allows water to boil at   at pressures greater than  1 atm. 
C)  it provides very high temperatures and very low pressures. 
D)  it allows water to boil at   at pressures less than  1 atm. 
E)  it allows water to boil at temperatures less than   
A)  it allows water to boil at temperatures above   
B)  it allows water to boil at   at pressures greater than  1 atm. 
C)  it provides very high temperatures and very low pressures. 
D)  it allows water to boil at   at pressures less than  1 atm. 
E)  it allows water to boil at temperatures less than

Question 12

A diver exhales a bubble with a volume of  250 mL at a pressure of  2.4 atm and a temperature of   What is the volume of the bubble when it reaches the surface where the pressure is  1.0 atm  and the temperature is   if the amount of gas does not change?

Accepted Answer

A)   110 mL 
B)   100 mL 
C)   1100 mL 
D)   580 mL 
E)   630 mL 
A)   110 mL 
B)   100 mL 
C)   1100 mL 
D)   580 mL 
E)   630 mL

Question 13

If atmospheric pressure on a certain day is 749 mmHg, what is the partial pressure of nitrogen, given that nitrogen is about 78% of the atmosphere?

Accepted Answer

A) 760 mmHg 
B) 170 mmHg 
C) 600 mmHg 
D) 750 mmHg 
E) 580 mmHg 
A) 760 mmHg 
B) 170 mmHg 
C) 600 mmHg 
D) 750 mmHg 
E) 580 mmHg

Question 14

A balloon is filled with helium gas. For the question(s)that follow, select the letter of the balloon diagram that corresponds to the given
change in conditions.  
-

Accepted Answer

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

Question 15

Avogadro's Law is usually written as ________.

Accepted Answer

The answer of Avogadro's Law is usually written as ________....

Question 16

Oxygen makes up about ________ percent of the atmosphere.

Accepted Answer

The answer of Oxygen makes up about ________ percent of...

Question 17

According to the kinetic theory of gases, a gas can be compressed much more than a liquid or solid because

Accepted Answer

A) gas particles do not attract or repel one another. 
B) a gas is composed of very small particles. 
C) gas particles move faster when the temperature increases. 
D) the particles of a gas are very far apart. 
E) gas particles move rapidly. 
A) gas particles do not attract or repel one another. 
B) a gas is composed of very small particles. 
C) gas particles move faster when the temperature increases. 
D) the particles of a gas are very far apart. 
E) gas particles move rapidly.

Question 18

Charles's law is usually written as ________.

Accepted Answer

The answer of Charles's law is usually written as ________....

Question 19

One atmosphere is the same as ________ mmHg.

Accepted Answer

The answer of One atmosphere is the same as ________...

Question 20

According to Boyle's Law, the pressure of a gas increases as the volume decreases because

Accepted Answer

A) the gas particles strike the walls of the container with more force. 
B) the kinetic energy of the gas particles increases. 
C) the temperature of the gas increases. 
D) the gas particles strike the walls of the container more often. 
E) the gas particles get bigger. 
A) the gas particles strike the walls of the container with more force. 
B) the kinetic energy of the gas particles increases. 
C) the temperature of the gas increases. 
D) the gas particles strike the walls of the container more often. 
E) the gas particles get bigger.

Exam 8: Gases

As the temperature of a gas increases, the density of the gas will

A tank contains a mixture of helium, neon, and argon gases. If the total pressure in the tank is 490. mmHg and the partial pressures of helium and argon are 215 mmHg and 102 mmHg, respectively, what is the Partial pressure of neon?

A sample of helium gas at and 3.60 atm pressure is cooled in the same container to a temperature of What is the new pressure, if volume and amount of gas do not change?

At STP, the molar volume of a gas is ________.

The ideal gas law is usually written as ________.

In the kinetic molecular theory of gas behavior, the distance between gas molecules is assumed to be ________ the diameter of the gas molecules.

When the combined gas law is rearranged to solve for the following is the correct expression:

Which of the following is NOT a potential use for a hyperbaric chamber?

The atmospheric pressure in Denver, CO is 633 mmHg. What is this pressure in atm?

At 570. mm Hg and a gas sample has a volume of 2270 mL. What is the final pressure (in mmHg) at a volume of 1250 mL and a temperature of if the amount of gas does not change?

An autoclave is used to sterilize surgical equipment because

A diver exhales a bubble with a volume of 250 mL at a pressure of 2.4 atm and a temperature of What is the volume of the bubble when it reaches the surface where the pressure is 1.0 atm and the temperature is if the amount of gas does not change?

If atmospheric pressure on a certain day is 749 mmHg, what is the partial pressure of nitrogen, given that nitrogen is about 78% of the atmosphere?

A balloon is filled with helium gas. For the question(s)that follow, select the letter of the balloon diagram that corresponds to the given change in conditions. -

Avogadro's Law is usually written as ________.

Oxygen makes up about ________ percent of the atmosphere.

According to the kinetic theory of gases, a gas can be compressed much more than a liquid or solid because

Charles's law is usually written as ________.

One atmosphere is the same as ________ mmHg.

According to Boyle's Law, the pressure of a gas increases as the volume decreases because

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