Question 1

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

Accepted Answer

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

Question 2

A diver exhales a bubble with a volume of 250 mL at a pressure of 2.4 atm and a temperature of 15 °C. What is the volume of the bubble when it reaches the surface where the pressure is 1.0 atm and the temperature is 27 °C?

Accepted Answer

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

Question 3

Match the correct formula with the gas law name given.
-Dalton's Law

Accepted Answer

A) $\frac { P _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } } { T _ { 2 } }$ 
B) $\frac { V _ { 1 } } { n _ { 1 } }$ = $\frac { V _ { 2 } } { n _ { 2 } }$ 
C) $\frac { V _ { 1 } } { T _ { 1 } }$ = $\frac { V _ { 2 } } { T _ { 2 } }$ 
D) PV = nRT 
E) $\frac { P _ { 1 } V _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } V _ { 2 } } { T _ { 2 } }$
F)P1V1 = P2V2
G)mass/volume
H)PT = P1 + P2 + P3 ... 
A) $\frac { P _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } } { T _ { 2 } }$ 
B) $\frac { V _ { 1 } } { n _ { 1 } }$ = $\frac { V _ { 2 } } { n _ { 2 } }$ 
C) $\frac { V _ { 1 } } { T _ { 1 } }$ = $\frac { V _ { 2 } } { T _ { 2 } }$ 
D) PV = nRT 
E) $\frac { P _ { 1 } V _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } V _ { 2 } } { T _ { 2 } }$
F)P1V1 = P2V2
G)mass/volume
H)PT = P1 + P2 + P3 ...

Question 4

An autoclave is used to sterilize surgical equipment because

Accepted Answer

A)  it allows water to boil at temperatures less than 100 °C. 
B)  it allows water to boil at 100 °C at pressures less than 1 atm. 
C)  it allows water to boil at 100 °C at pressures greater than 1 atm. 
D)  it allows water to boil at temperatures above 100 °C. 
E)  it provides very high temperatures and very low pressures. 
A)  it allows water to boil at temperatures less than 100 °C. 
B)  it allows water to boil at 100 °C at pressures less than 1 atm. 
C)  it allows water to boil at 100 °C at pressures greater than 1 atm. 
D)  it allows water to boil at temperatures above 100 °C. 
E)  it provides very high temperatures and very low pressures.

Question 5

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)  165 mm Hg 
B)  584 mm Hg 
C)  600 mm Hg 
D)  749 mm Hg 
E)  760 mm Hg 
A)  165 mm Hg 
B)  584 mm Hg 
C)  600 mm Hg 
D)  749 mm Hg 
E)  760 mm Hg

Question 6

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

Accepted Answer

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

Question 7

During inspiration, we actually make use of 100% of the oxygen in the air we breathe.

Accepted Answer

A) True 
 B)False

Question 8

A sample of argon at 300. °C and 50.0 atm pressure is cooled in the same container to a temperature of 0.00 °C. What is the new pressure?

Accepted Answer

A)  105 atm 
B)  45.5 atm 
C)  54.9 atm 
D)  23.8 atm 
E)  42.7 atm 
A)  105 atm 
B)  45.5 atm 
C)  54.9 atm 
D)  23.8 atm 
E)  42.7 atm

Question 9

Indicate the effect on the pressure of the following change.
-The volume and the Kelvin temperature are reduced by one-half (n constant).

Accepted Answer

A) increases 
B) decreases 
C) no change 
A) increases 
B) decreases 
C) no change

Question 10

The total pressure in a mixture of gases is equal to the partial pressure(s) of

Accepted Answer

A)  the gas with the greatest number of moles. 
B)  the gas with the smallest number of moles. 
C)  the gas with the highest molecular weight. 
D)  the gas that occupies the largest volume. 
E)  all the gases added together. 
A)  the gas with the greatest number of moles. 
B)  the gas with the smallest number of moles. 
C)  the gas with the highest molecular weight. 
D)  the gas that occupies the largest volume. 
E)  all the gases added together.

Question 11

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 constant temperature?

Accepted Answer

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

Question 12

Match the correct formula with the gas law name given.
-Boyle's Law

Accepted Answer

A) $\frac { P _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } } { T _ { 2 } }$ 
B) $\frac { V _ { 1 } } { n _ { 1 } }$ = $\frac { V _ { 2 } } { n _ { 2 } }$ 
C) $\frac { V _ { 1 } } { T _ { 1 } }$ = $\frac { V _ { 2 } } { T _ { 2 } }$ 
D) PV = nRT 
E) $\frac { P _ { 1 } V _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } V _ { 2 } } { T _ { 2 } }$
F)P1V1 = P2V2
G)mass/volume
H)PT = P1 + P2 + P3 ... 
A) $\frac { P _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } } { T _ { 2 } }$ 
B) $\frac { V _ { 1 } } { n _ { 1 } }$ = $\frac { V _ { 2 } } { n _ { 2 } }$ 
C) $\frac { V _ { 1 } } { T _ { 1 } }$ = $\frac { V _ { 2 } } { T _ { 2 } }$ 
D) PV = nRT 
E) $\frac { P _ { 1 } V _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } V _ { 2 } } { T _ { 2 } }$
F)P1V1 = P2V2
G)mass/volume
H)PT = P1 + P2 + P3 ...

Question 13

Zn(s) + 2 HCl(aq) → H₂(g) + ZnCl₂(aq) When 25.0 g of Zn reacts, how many L of H₂ gas are formed at 25 °C and a pressure of 854 mmHg?

Accepted Answer

A)  8.56 L 
B)  0.120 L 
C)  8.32 L 
D)  22.4 L 
E)  0.382 L 
A)  8.56 L 
B)  0.120 L 
C)  8.32 L 
D)  22.4 L 
E)  0.382 L

Question 14

Match the correct formula with the gas law name given.
-Gay-Lussac's Law

Accepted Answer

A) $\frac { P _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } } { T _ { 2 } }$ 
B) $\frac { V _ { 1 } } { n _ { 1 } }$ = $\frac { V _ { 2 } } { n _ { 2 } }$ 
C) $\frac { V _ { 1 } } { T _ { 1 } }$ = $\frac { V _ { 2 } } { T _ { 2 } }$ 
D) PV = nRT 
E) $\frac { P _ { 1 } V _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } V _ { 2 } } { T _ { 2 } }$
F)P1V1 = P2V2
G)mass/volume
H)PT = P1 + P2 + P3 ... 
A) $\frac { P _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } } { T _ { 2 } }$ 
B) $\frac { V _ { 1 } } { n _ { 1 } }$ = $\frac { V _ { 2 } } { n _ { 2 } }$ 
C) $\frac { V _ { 1 } } { T _ { 1 } }$ = $\frac { V _ { 2 } } { T _ { 2 } }$ 
D) PV = nRT 
E) $\frac { P _ { 1 } V _ { 1 } } { T _ { 1 } }$ = $\frac { P _ { 2 } V _ { 2 } } { T _ { 2 } }$
F)P1V1 = P2V2
G)mass/volume
H)PT = P1 + P2 + P3 ...

Question 15

A gas at 5.00 atm pressure was stored in a tank during the winter at 5.0 °C. During the summer, the temperature in the storage area reached 40.0 °C. What was the pressure in the gas tank then?

Accepted Answer

A)  0.625 atm 
B)  4.44 atm 
C)  5.63 atm 
D)  40.0 atm 
E)  69.5 atm 
A)  0.625 atm 
B)  4.44 atm 
C)  5.63 atm 
D)  40.0 atm 
E)  69.5 atm

Question 16

A gas sample contains 4.0 g of CH4 and 2.0 g of He. What is the volume of the sample at STP?

Accepted Answer

A)  130 L 
B)  11 L 
C)  17 L 
D)  30. L 
E)  5.6 L 
A)  130 L 
B)  11 L 
C)  17 L 
D)  30. L 
E)  5.6 L

Question 17

A gas sample in a closed, expandable container of initial volume 5.00 L was allowed to warm from 25 °C to 35 °C. What was its new volume?

Accepted Answer

A)  4.84 L 
B)  5.17 L 
C)  7.00 L 
D)  3.57 L 
E)  4380 L 
A)  4.84 L 
B)  5.17 L 
C)  7.00 L 
D)  3.57 L 
E)  4380 L

Question 18

In the kinetic molecular theory of gas behavior, particles of a gas tend to move __________ and collisions between them are __________.

Accepted Answer

A)  rapidly; rare 
B)  slowly; rare 
C)  rapidly; elastic 
D)  slowly; elastic 
E)  slowly; unusual 
A)  rapidly; rare 
B)  slowly; rare 
C)  rapidly; elastic 
D)  slowly; elastic 
E)  slowly; unusual

Question 19

How many atoms of neon occupy a volume of 14.3 L at STP?

Accepted Answer

A)  2.21 × 1025 atoms 
B)  1.92 × 1025 atoms 
C)  3.88 × 1024 atoms 
D)  3.84 × 1023 atoms 
E)  9.45 × 1023 atoms 
A)  2.21 × 1025 atoms 
B)  1.92 × 1025 atoms 
C)  3.88 × 1024 atoms 
D)  3.84 × 1023 atoms 
E)  9.45 × 1023 atoms

Question 20

The kinetic energy of a gas sample is directly proportional to the Kelvin temperature of the gas.

Accepted Answer

A) True 
 B)False

Exam 7: Gases

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

A diver exhales a bubble with a volume of 250 mL at a pressure of 2.4 atm and a temperature of 15 °C. What is the volume of the bubble when it reaches the surface where the pressure is 1.0 atm and the temperature is 27 °C?

Match the correct formula with the gas law name given. -Dalton's Law

An autoclave is used to sterilize surgical equipment because

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?

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

During inspiration, we actually make use of 100% of the oxygen in the air we breathe.

A sample of argon at 300. °C and 50.0 atm pressure is cooled in the same container to a temperature of 0.00 °C. What is the new pressure?

Indicate the effect on the pressure of the following change. -The volume and the Kelvin temperature are reduced by one-half (n constant).

The total pressure in a mixture of gases is equal to the partial pressure(s) of

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 constant temperature?

Match the correct formula with the gas law name given. -Boyle's Law

Zn(s) + 2 HCl(aq) → H₂(g) + ZnCl₂(aq) When 25.0 g of Zn reacts, how many L of H₂ gas are formed at 25 °C and a pressure of 854 mmHg?

Match the correct formula with the gas law name given. -Gay-Lussac's Law

A gas at 5.00 atm pressure was stored in a tank during the winter at 5.0 °C. During the summer, the temperature in the storage area reached 40.0 °C. What was the pressure in the gas tank then?

A gas sample contains 4.0 g of CH4 and 2.0 g of He. What is the volume of the sample at STP?

A gas sample in a closed, expandable container of initial volume 5.00 L was allowed to warm from 25 °C to 35 °C. What was its new volume?

In the kinetic molecular theory of gas behavior, particles of a gas tend to move __________ and collisions between them are __________.

How many atoms of neon occupy a volume of 14.3 L at STP?

The kinetic energy of a gas sample is directly proportional to the Kelvin temperature of the gas.

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A gas sample contains 4.0 g of CH₄ and 2.0 g of He. What is the volume of the sample at STP?

In the kinetic molecular theory of gas behavior, particles of a gas tend to move and collisions between them are .