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Gas Laws Practice

Total questions: 10

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

A gas with a volume of 4.0 L at a pressure of 205 kPa is allowed to expand to a volume of 12.0 L. What is the pressure in the container if the temperature remains constant?

a)

68.3

b)

0.0146

c)

615

d)

0.00163

2.

Calculate the new temperature when 6.00 L at 20.0 °C is compressed to 4.00 L.

a)

195

b)

0.00512

c)

440

d)

0.00228

3.

A sealed container has a pressure of 1.5 atm at 25°C. If the temperature is raised to 125°C, what will be the new pressure?

a)

2

b)

1.12

c)

7.5

d)

0.3

4.

A gas balloon has a volume of 106.0 liters when the temperature is 45.0°C and the pressure is 740.0 mm of mercury. What will its volume be at 20.0°C and 780.0 mm of mercury pressure?

a)

92.7

b)

44.7

c)

103

d)

109

5.

A gas is heated from 263.0 K to 298.0 K and the volume is increased from 24.0 liters to 35.0 liters by moving a large piston within a cylinder. If the original pressure was 1.00 atm, what would the final pressure be?

a)

0.777

b)

0.605

c)

1.65

d)

0.73

6.
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
7.
Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure. 
a)
0 K 
b)
107 K 
c)
207 K 
d)
307 K 
8.
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
9.

We use two R values: 0.0821 and 8.314. How do you know which to use for a problem?

a)

The units for pressure

b)

The units for temperature

c)

The units of volume

d)

The amount of moles

10.

What is STP?

a)

1 Degrees Celsius and 0 ATM

b)

0 Degrees Celsius and 1 ATM

c)

0 Kevin and 10 ATM

d)

273 Celsius and 273 ATM