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Gas Laws Practice

Total questions: 40

Worksheet time: 2hrs 44mins

Name
Class
Date
1.
Gas Laws involve what three terms?
a)
Solid Liquid Gas 
b)
Speed Velocity Acceleration 
c)
Elements Compounds Mixtures 
d)
Pressure Temperature Volume 
2.
Charles' Law States...
a)
As Pressure goes up volume goes down
b)
As Pressure goes up temperature goes up
c)
As Volume goes up temperature goes up 
d)
As Pressure goes down volume goes down 
3.
If the pressure exerted by a gas at 298 K in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?
a)
P1/T1 = P2/T2
b)
PV = nRT
c)
V1/n1 = V2/n2
d)
P1V1 = P2V2
4.
What type of relationship is Charles' Law?
a)
Inverse
b)
Direct
c)
Not enough information
d)
#goals
5.
In order to convert to Kelvin, you add ______ to the Celsius measurement.
a)
372
b)
273
c)
237
d)
732
6.
100 degrees Celsius is equal to _______ Kelvin. 
a)
0 K
b)
273 K
c)
173 K
d)
373 K
7.
If a balloon is cooled what will happen to the volume?
a)
Volume will increase
b)
Volume will decrease
c)
Volume will not change
8.
You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?
a)
5 L
b)
20 L
c)
It would stay at 10L
d)
1 L
9.
Determine the initial temperature of a random gas when the initial volume is 2.2 L and it is cooled to 88K with a volume of 0.85 L. 
a)
0.029 K
b)
0.021 K
c)
227.76 K
d)
34 K
10.

What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?

a)

0.9 atm

b)

2.4 atm

c)

1.6 atm

d)

3.4 atm

11.
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
12.

A sample of gas with a volume of 30.0 mL at 25.0oC is heated to 50.0oC. What is the new volume of the gas?

a)

60.0 mL

b)

15.0 mL

c)

27.5 mL

d)

32.5 mL

13.

What is the pressure exerted by 5.00 moles of nitrogen gas contained in a 30.0 Liter container at 25.0 °C?

a)

3670 atm

b)

0.245 atm

c)

4.08 atm

d)

605 atm

14.
What will happen to the volume of a gas under constant temperature if the pressure increases?
a)
Increase
b)
Decrease
c)
Nothing
d)
Explosion!
15.
f a gas at 25.0 °C occupies 3.60 liters at a pressure of 1.00 atm, what will be its volume at a pressure of 2.50 atm?
a)
9 L
b)
.69 L
c)
1.44 L
16.
A gas is heated from 263K to 298K. The volume is increased from 24.0L to 35.0L. If the original pressure was 1.00 atm, what is the new pressure?
a)
0.78 atm
b)
1.65 atm
c)
1.28 atm
d)
0.61 atm
17.
1. If a gas at 25.0 °C occupies 3.60 liters at a pressure of 1.00 atm, what will be its volume at a pressure of 2.50 atm?
a)
1.5L
b)
45 L
c)
1.44L
d)
27.4L
18.

What is the temperature of 3.45 moles of a gas at a pressure of 5.60 atm and a volume of 12.0 liters?

a)

237 mL

b)

237 K

c)

237 L

d)

237 atm

19.

A 20.0 gram sample of hydrogen gas has a volume of 40.55 L and a tempeature of 67.00C. What is the pressure of the gas? (hint--don't forget to convert mass to moles!!)

a)

2.71 mm Hg

b)

2.71 atm

c)

6.88 mm Hg

d)

6.88 atm

20.
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 mole
b)
.0069 mol
c)
2.766 mol
d)
9.887 mol
21.
At STP, what is pressure in atmospheres?
a)
1 atm
b)
10 atm
c)
0 atm
d)
100 atm
22.
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
23.

Which formula would you use to answer the following problem?

At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres?

a)

PV=nRT

b)

P1V1/T1=P2V2/T2

c)

Not enough information is given.

24.
You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?
a)
5 L
b)
20 L
c)
It would stay at 10L
d)
1 L
25.
If the temperature of a gas increase, the pressure...
a)
Decreases
b)
Increases
c)
Does not change
26.
What is standard temperature?
a)
0K
b)
0oC
c)
173 K
d)
173.15 K
27.

A gas at 928 kpa, 129 C occupies a volume of 569 L. Calculate the volume at 319 kpa and 32 C.

a)

1256 L

b)

418.18 L

c)

1100 L

d)

1400 L

28.
A sample of gas with a volume of 30.0 mL at 25.0oC is heated to 50.0oC.  What is the new volume of the gas?
a)
60.0 mL
b)
15.0 mL
c)
27.5 mL
d)
32.5 mL
29.
Gases have...
a)
A definite shape and volume
b)
A definite shape but no definite volume
c)
No definite shape but a definite volume
d)
No definite shape or volume
30.
What variable should be placed in the blank to complete the following expression of the ideal gas equation:  PV = nR___?  
a)
boiling point of the gas in Kelvins 
b)
temperature of the gas in Celsius
c)
temperature of the gas in Kelvins 
d)
density of the gas in g/cm3
31.
In the ideal gas law, which variable represents the gas constant?
a)
n
b)
R
c)
T
d)
V
32.

If 22.5 L of nitrogen at 748 mm Hg are compressed to 725 mm Hg at constant temperature, what is the new volume?

a)

23.2

b)

21.8

c)

0.0431

d)

0.0459

33.

A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.0 degrees Celsius. By noon the temperature has risen an additional 25 degrees. What is the new volume of the balloon?

a)

38L

b)

79L

c)

44L

d)

36L

34.

6.0 L of gas in a piston at a pressure of 1.0 atm are compressed until the volume is 3.5 L. What is the new pressure inside the piston?

a)

1.7 atm

b)

0.6 atm

c)

21 atm

d)

1 atm

35.

A gas occupies 900.0 mL at 150 kPa. What is the new pressure when the gas is compressed to only 500.0 mL?

a)

270 kPa

b)

270 atm

c)

83 kPa

d)

83 atm

36.

If a gas is cooled from 323.0 K to 273.15 K and volume is kept constant, what final pressure would result if the original pressure was 750.0 mmHg?

a)

634 mmHg

b)

887 mmHg

c)

887 atm

d)

634 atm

37.

How many moles of helium are in a gas

sample that has a volume of .5 L at a

pressure of 3.00 atm and a temperature of

298 K?

a)

6.13 moles

b)

0.613 moles

c)

0.0613 moles

d)

61.3 moles

38.

How many moles of helium are contained in a 5.00L canister at 101kPa and 30.0oC?

a)

2.02 moles

b)

0.201 moles

c)

0.494 moles

d)

4.99 moles

39.

A water bottle at STP is cooled to -155°C. What is the new pressure?

a)

3.2 atm

b)

0.43 atm

c)

1.8 atm

d)

0.27 atm

40.

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

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