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Gas Laws Review

Total questions: 42

Worksheet time: 1hrs 2mins

Name
Class
Date
1.

What volume does 3.2 moles of Fluorine gas occupy at STP?

a)

About 72 L

b)

About 0.09 L

c)

About 0.014 L

d)

About 111 L

2.
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.
a)
7.18 L 
b)
7.81 L
c)
4.63 L
d)
4.36 L
3.

If pressure goes down in a container, what happens to volume when the temperature is held constant.

a)

Increase

b)

Decrease

4.

If temperature goes down in a container, what happens to volume when the pressure is held constant.

a)

Increase

b)

Decrease

5.

How would you convert 34oC to Kelvin?

a)

K = oC + 273

b)

oC = K + 273

c)

K = oC - 273

d)

oC = K + 273

6.

What formula would you use to solve the following: A sample of nitrogen gas was collected over water at a temperature of 23.0°C. What is the partial pressure of nitrogen if the atmospheric pressure (total) was 785 mmHg and the vapor pressure of water was 21.1 mmHg?

a)
b)
c)
d)
7.

What formula would you use to solve the following: At high altitudes, pilots have to supplement their supply of oxygen. In this mixture, there are oxygen and nitrogen gases. If nitrogen’s partial pressure is 250mmHg, calculate the partial pressure of oxygen if the total pressure is 710mmHg.

a)
b)
c)
d)
8.

What formula would you use to solve the following problem: 76 L of compressed oxygen is at a temperature of 330 K. If there are 7.3 moles of oxygen in the container, calculate the pressure (in atm) inside the container.

a)
b)
c)
d)
9.
What is 50 C in Kelvin?
a)
223
b)
323
c)
100
d)
50
10.
Gas laws involve what three variables?
a)
Solid Liquid Gas 
b)
Speed Velocity Acceleration 
c)
Elements Compounds Mixtures 
d)
Pressure Temperature Volume 
11.
What will happen to the volume of a gas if the pressure increases, with constant temperature ?
a)
Increase
b)
Decrease
c)
Nothing
d)
Explosion!
12.

All of the following are temperature units except ______

a)

atm

b)

Kelvin

c)

Celsius

d)

Farenheit

13.

Pressure units used for Chemistry are

a)

atm

b)

psi

c)

mmHg

d)

kPa

14.

Temperature units used in Chemistry are _________

a)

C

b)

kPa

c)

F

d)

K

15.

Match the following units to their names.

a)

Pressure

1.

mmHg

b)

Volume

2.

L

c)

Temperature

3.

K

d)

Pressure

4.

atm

e)

Moles

5.

mol

16.

A student inflates a balloon with helium then places it in the freezer. The student should expect

a)

the balloon's volume to increase

b)

the balloon's volume to decrease

c)

the balloon's moles to increase

d)

the balloon's moles to decrease

17.

Three gases are mixed together in a container with a total pressure of 4.8 atm. If two of the gases have pressures of 1.2 atm and 1.5 atm, what is the pressure of the third gas?

a)

2.5 atm

b)

1.8 atm

c)

2.1 atm

d)

1.3 atm

18.

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

a)

The pressure will increase

b)

The pressure will decrease

c)

The pressure will remain constant

d)

The pressure will equalize

19.
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.
a)
7.18 L 
b)
7.81 L
c)
4.63 L
d)
4.36 L
20.

A substance is heated. What happens to the volume of the gas?

a)

Decreases

b)

Stays the same

c)

Not enough information

d)

Increases

21.

The pressure of the gas in the balloon in the ice water will be:

a)

Greater than that of the balloon in the boiling water.

b)

Less than that of the balloon in the boiling water.

c)

The same as that of the balloon in the boiling water.

d)

Not enough information to answer the statement.

22.
Directly proportional means that as one value increases ....................
a)
the other stays the same 
b)
the other increases as well
c)
the other decereases
d)
the other goes to zero
23.
Inversely proportional means as one value increases the other............. 
a)
increases 
b)
decreases 
c)
stays the same 
d)
goes to zero
24.
What will happen to the volume of a gas under constant temperature if the pressure increases?
a)
Increase
b)
Decrease
c)
Nothing
d)
Explosion!
25.
Which container will have a lower pressure?
a)
left
b)
right
c)
they both have the same pressure
d)
I don't know
26.
Determine the number of moles in a container of gas at STP with a volume of 99.2 L. 
a)
2222.08 moles
b)
4.43 moles
c)
22.4 moles 
d)
76.8 moles
27.
If the pressure exerted by a gas at 25 degrees C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?
a)

.002766 mol

b)
.0069 mol
c)
2.766 mol
d)
9.887 mol
28.
In order to solve gas law calculations, temperature must be measured in:
a)
Fahrenheit
b)
Celsius
c)
Kelvin
d)
It doesn't matter 
29.

In order to convert to Kelvin, you add ______ to the Celsius measurement.

a)

372

b)

273

c)

237

d)

732

30.
This graph is an example of two variables that are:
a)
directly proportional
b)
inversely proportional
c)
Straight line
d)
No relation
31.

A gas at STP would be under the following conditions:

a)

T = 25 C

P = 1 atm

b)

T = 0 C

P = 0 atm

c)

T = 0 C

P = 1 atm

d)

T = 0 C

P = 2 atm

32.
When Pressure increases then the Volume must...
a)
Increase
b)
decrease
33.
When Volume increases then Pressure must...
a)
Increase
b)
Decrease
34.
True or False: Gases can be compressed. 
a)
True
b)
False
35.

When the temperature of a gas decreases (with pressure and amount held constant), does the volume increase or decrease?

a)

Unaltered

b)

Remains constant

c)

Increase

d)

Decrease

36.

5. According to Charles Law, if Temperature of a gas increases Volume will also....

a)

Increases

b)

Stays the same

c)

Decreases

37.

4. According to Charles Law, the relationship between Temperature and Volume can best be described as....

a)

Inverse Relationship

b)

Direct Relationship

c)

No Relationship

38.

What is the total pressure in atm if the partial pressures are 0.396 atm and 0.649 atm?

a)

1.05 atm

b)

0.396 atm

c)

0.649 atm

d)

760 atm

39.

When the volume of gas increases, the pressure...

a)

decreases

b)

stays the same

c)

increases

40.

The standard pressure at STP is (a)   .

Choose from the below words
2.00 atm
1.00 atm
0.50 atm
1.50 atm
41.

If a balloon is heated, what happens to the volume of the air in the balloon if the pressure is constant?

a)

increase

b)

decreases

c)

stays the same

d)

I do not know

42.

How are pressure and temperature related?

a)

Directly

b)

Indirectly

c)

They aren't related