Question 1

What is the final volume of a gas that initially occupies 2.50 L at   and is subsequently heated to

Accepted Answer

A) 2.69 L 
B) 2.96 L 
C) 2.23 L 
D) 2.32 L 
E) none of the above 
A) 2.69 L 
B) 2.96 L 
C) 2.23 L 
D) 2.32 L 
E) none of the above

Question 2

As you increase temperature,you increase the average energy of the gas particles.

Accepted Answer

A) True 
 B)False

Question 3

The ideal gas law is:

Accepted Answer

A) PV = nRT 
B) P =   
C) T =   
D) V =   
E) All of the above are forms of the ideal gas law. 
A) PV = nRT 
B) P =   
C) T =   
D) V =   
E) All of the above are forms of the ideal gas law.

Question 4

What is the pressure of a 1.0 L flask containing   of He at 25°C? (R= 0.0821 L atm/ mol K)

Accepted Answer

A) 98 atm 
B) 3.7 atm 
C) 7.3 atm 
D) 15 atm 
E) none of the above 
A) 98 atm 
B) 3.7 atm 
C) 7.3 atm 
D) 15 atm 
E) none of the above

Question 5

What is the final volume (L)of a 1.00 L system at 315 K and 1.10 atm if STP conditions are established?

Accepted Answer

A) 1.05 
B) 0.935 
C) 1.50 
D) 0.953 
E) none of the above 
A) 1.05 
B) 0.935 
C) 1.50 
D) 0.953 
E) none of the above

Question 6

If the number of gas particles is tripled,the volume will be 1/3 of the original given that temperature and pressure do not change.

Accepted Answer

A) True 
 B)False

Question 7

What is the final volume of a 500.0 mL gas container that increased in temperature from   to   while the pressure increased from   to   ?

Accepted Answer

A) 0.691 L 
B) 2.77 L 
C) 0.362 L 
D) 1.45 L 
E) none of the above 
A) 0.691 L 
B) 2.77 L 
C) 0.362 L 
D) 1.45 L 
E) none of the above

Question 8

A gas cylinder contains only the gases radon,nitrogen,and helium.The radon has a pressure of 222 torr while the nitrogen has a pressure of 446 torr.If the total pressure inside the cylinder is 771 torr,what is the pressure that is due to the helium?

Accepted Answer

A) 771 torr 
B) 668 torr 
C) 549 torr 
D) 103 torr 
E) none of the above 
A) 771 torr 
B) 668 torr 
C) 549 torr 
D) 103 torr 
E) none of the above

Question 9

Divers often inflate heavy duty balloons attached to salvage items on the sea floor.If a balloon is filled to a volume of   at a pressure of   ,what is the volume of the balloon when it reaches the surface?

Accepted Answer

A) 7.50 L 
B) 1.20 L 
C) 0.833 L 
D) 5.50 L 
E) none of the above 
A) 7.50 L 
B) 1.20 L 
C) 0.833 L 
D) 5.50 L 
E) none of the above

Question 10

"Molar Mass" can be calculated using the formula: Molar mass =   .

Accepted Answer

A) True 
 B)False

Question 11

The volume of a gas and the number of particles is inversely proportional.

Accepted Answer

A) True 
 B)False

Question 12

If the number of moles of a gas initially contained in a 2.10 L vessel is doubled,what is the final volume of the gas in liters? (Assume the pressure and temperature remain constant.)

Accepted Answer

A) 6.30 
B) 1.05 
C) 4.20 
D) 8.40 
E) none of the above 
A) 6.30 
B) 1.05 
C) 4.20 
D) 8.40 
E) none of the above

Question 13

What is the equivalent pressure of 0.905 atm in units of mm Hg?

Accepted Answer

A) 688 
B) 840 
C) 0.905 
D) 13.3 
E) none of the above 
A) 688 
B) 840 
C) 0.905 
D) 13.3 
E) none of the above

Question 14

Gas particles lose energy every time they collide with each other or the container wall.

Accepted Answer

A) True 
 B)False

Question 15

A barometer uses mercury because:

Accepted Answer

A) it is a convenient,safe,lightweight material. 
B) the density of mercury is very large which allows the barometer to be short. 
C) it is the traditional substance used,water could be as easily used. 
D) it is the only liquid metal at room temperature. 
E) All of the above are true. 
A) it is a convenient,safe,lightweight material. 
B) the density of mercury is very large which allows the barometer to be short. 
C) it is the traditional substance used,water could be as easily used. 
D) it is the only liquid metal at room temperature. 
E) All of the above are true.

Question 16

The volume of a gas is independent of the temperature.

Accepted Answer

A) True 
 B)False

Question 17

What is the final pressure of a system (atm)that has the volume increased from   to   with an initial pressure of

Accepted Answer

A) 1.1 
B) 0.85 
C) 1.8 
D) 1.2 
E) none of the above 
A) 1.1 
B) 0.85 
C) 1.8 
D) 1.2 
E) none of the above

Question 18

What is the initial temperature (°C)of a system that has the pressure decreased by 10 times while the volume increased by 5 times with a final temperature of   ?

Accepted Answer

A) 27 
B) 75 
C) -198 
D) 300 
E) none of the above 
A) 27 
B) 75 
C) -198 
D) 300 
E) none of the above

Question 19

Using pure oxygen in scuba diving tanks is a good method of preventing the nitrogen bends.

Accepted Answer

A) True 
 B)False

Question 20

If some argon gas at 400 mm Hg pressure is forced into a gas cylinder that already contained only neon gas at 400 mm Hg pressure,the total pressure in the cylinder would now be 800 mm Hg.

Accepted Answer

A) True 
 B)False

What is the final volume of a gas that initially occupies 2.50 L at and is subsequently heated to

As you increase temperature,you increase the average energy of the gas particles.

The ideal gas law is:

What is the pressure of a 1.0 L flask containing of He at 25°C? (R= 0.0821 L atm/ mol K)

What is the final volume (L)of a 1.00 L system at 315 K and 1.10 atm if STP conditions are established?

If the number of gas particles is tripled,the volume will be 1/3 of the original given that temperature and pressure do not change.

What is the final volume of a 500.0 mL gas container that increased in temperature from to while the pressure increased from to ?

A gas cylinder contains only the gases radon,nitrogen,and helium.The radon has a pressure of 222 torr while the nitrogen has a pressure of 446 torr.If the total pressure inside the cylinder is 771 torr,what is the pressure that is due to the helium?

Divers often inflate heavy duty balloons attached to salvage items on the sea floor.If a balloon is filled to a volume of at a pressure of ,what is the volume of the balloon when it reaches the surface?

"Molar Mass" can be calculated using the formula: Molar mass = .

The volume of a gas and the number of particles is inversely proportional.

If the number of moles of a gas initially contained in a 2.10 L vessel is doubled,what is the final volume of the gas in liters? (Assume the pressure and temperature remain constant.)

What is the equivalent pressure of 0.905 atm in units of mm Hg?

Gas particles lose energy every time they collide with each other or the container wall.

A barometer uses mercury because:

The volume of a gas is independent of the temperature.

What is the final pressure of a system (atm)that has the volume increased from to with an initial pressure of

What is the initial temperature (°C)of a system that has the pressure decreased by 10 times while the volume increased by 5 times with a final temperature of ?

Using pure oxygen in scuba diving tanks is a good method of preventing the nitrogen bends.

If some argon gas at 400 mm Hg pressure is forced into a gas cylinder that already contained only neon gas at 400 mm Hg pressure,the total pressure in the cylinder would now be 800 mm Hg.

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Exam 11: Gases

What is the final volume of a gas that initially occupies 2.50 L at and is subsequently heated to

As you increase temperature,you increase the average energy of the gas particles.

The ideal gas law is:

What is the pressure of a 1.0 L flask containing of He at 25°C? (R= 0.0821 L atm/ mol K)

What is the final volume (L)of a 1.00 L system at 315 K and 1.10 atm if STP conditions are established?

If the number of gas particles is tripled,the volume will be 1/3 of the original given that temperature and pressure do not change.

What is the final volume of a 500.0 mL gas container that increased in temperature from to while the pressure increased from to ?

A gas cylinder contains only the gases radon,nitrogen,and helium.The radon has a pressure of 222 torr while the nitrogen has a pressure of 446 torr.If the total pressure inside the cylinder is 771 torr,what is the pressure that is due to the helium?

Divers often inflate heavy duty balloons attached to salvage items on the sea floor.If a balloon is filled to a volume of at a pressure of ,what is the volume of the balloon when it reaches the surface?

"Molar Mass" can be calculated using the formula: Molar mass = .

The volume of a gas and the number of particles is inversely proportional.

If the number of moles of a gas initially contained in a 2.10 L vessel is doubled,what is the final volume of the gas in liters? (Assume the pressure and temperature remain constant.)

What is the equivalent pressure of 0.905 atm in units of mm Hg?

Gas particles lose energy every time they collide with each other or the container wall.

A barometer uses mercury because:

The volume of a gas is independent of the temperature.

What is the final pressure of a system (atm)that has the volume increased from to with an initial pressure of

What is the initial temperature (°C)of a system that has the pressure decreased by 10 times while the volume increased by 5 times with a final temperature of ?

Using pure oxygen in scuba diving tanks is a good method of preventing the nitrogen bends.

If some argon gas at 400 mm Hg pressure is forced into a gas cylinder that already contained only neon gas at 400 mm Hg pressure,the total pressure in the cylinder would now be 800 mm Hg.

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters