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Gases and Gas Laws- Chem Honors Review

Total questions: 22

Worksheet time: 45mins

Name
Class
Date
1.

A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?

a)

2.1 L

b)

5.0 L

c)

8.2 L

d)

3.9 L

2.

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

3.

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)

2.1 atm

c)

1.6 atm

d)

3.4 atm

4.

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

5.
Which of the following would increase the (gas) pressure of a system?
a)
Increase the Temperature
b)
Pump in more gas
c)
Decrease the volume
d)
All of these
6.
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 
7.
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
8.

Determine the 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

9.

Pressure is

a)

defined as the mass that an object exerts when at rest.

b)

not a measurable in gases.

c)

defined as the number of moles of substance divided by the mass of the substance.

d)

created by the force of the gas particles impacting the walls of the container.

10.

Absolute zero is

a)

0 K

b)

where there is no molecular movement

c)

the coldest temperature possible

d)

all of these

11.
100 degrees Celsius is equal to _______ Kelvin. 
a)
0 K
b)
273 K
c)
173 K
d)
373 K
12.
The following graph shows ____ relationship. 
a)
Direct
b)
Inverse
13.
Boyle's law :  The pressure and volume of a gas show a _____ relationship. 
a)
Inverse 
b)
Direct 
14.
In the ideal gas law, which variable represents the gas constant?
a)
n
b)
R
c)
T
d)
V
15.
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm (make sure you use the correct R value).
a)
7.18 L 
b)
7.81 L
c)
4.63 L
d)
4.36 L
16.
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
17.

Which of the following graphs represents pressure versus volume (V) for a real gas at a constant temperature

a)

A

b)

B

c)

C

d)

D

18.

This graph represents which gas law ?

a)

Grahams law

b)

Avogadros law

c)

Boyles Law

d)

Charles Law

19.

Which of the following is a pair of equivalent values ?

a)

-298 K and O o C

b)

298 K ans -273 o C

c)

319 K and 46 o C

d)

319 K and 592 o C

20.

Which graph shows the correct relationship between the volume of a gas (V) and its absolute temperature (T), when pressure is held constant?

a)
b)
c)
d)
21.

As the temperature of a gas is increased, the average kinetic energy of its molecules

a)

Decreases

b)

Increases

c)

Remains the same

22.

A rigid cylinder with a movable piston contains 50.0 liters of Hydrogen gas at 30.0° C with a pressure of 1.00 atmosphere. What is the volume of the gas in the cylinder at STP?

a)

45.05 L

b)

45.55 L

c)

54.09 L

d)

55.51 L

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