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WorksheetsPre AP/GT Gas Laws Exam
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
If the number of moles of gas inside of a container increases, what will happen to the volume of the container if both temperature and pressure are kept constant?
a)
The volume will increase.
b)
The volume will decrease.
c)
The volume will remain constant.
d)
None of the above.
2.
A container is filled with helium gas. It has a volume of 4.0 liters and is at a temperature of 20.oC. If the temperature of the container is increased to 35 oC without removing any of the gas or changing the pressure, what will the new volume be?
a)
4.2 liters
b)
7.0 liters
c)
60 liters
d)
3.7 liters
3.
3.00 moles of helium gas (He) are in a container with a volume is 2.00 liters and a temperature is at 298 K. What is the approximate pressure in kilopascals?
a)
3710 kPa
b)
14900 kPa
c)
4950 kPa
d)
7150 kPa
4.
What would be the volume of 4.00 moles of nitrogen gas at standard temperature and pressure (STP)?
a)
112 L
b)
5.60 L
c)
145 L
d)
89.6 L
5.
There are 12.00 moles of an ideal gas kept inside a container with a volume of 2.50 liters. It is kept at room temperature (20oC). What is the approximate pressure of the gas in kilopascals?
a)
11 690 kPa
b)
798 kPa
c)
8 790 kPa
d)
115 kPa
6.
Robert Boyle contributed to our understanding of gases by describing the relationship between -
a)
pressure and volume
b)
volume and temperature
c)
volume and number of moles
d)
pressure and temperature
7.
If the pressure of gas inside of a container increases, what will happen to the temperature of the container if both volume and number of moles are kept constant?
a)
The temperature will increase.
b)
The temperature will decrease.
c)
The temperature will remain constant.
d)
None of the above.
8.
If the pressure inside of a container increases, what will happen to the volume of the container if both temperature and number of moles are kept constant?
a)
The volume will increase.
b)
The volume will decrease.
c)
The volume will remain constant.
d)
None of the above.
9.
Which of the following is not a point made by the kinetic molecular theory of gases?
a)
Gases are composed of tiny particles.
b)
The speed of gas particles is related to the temperature of the system.
c)
Gas particles are always moving with high speed random motion.
d)
Gas particles do not have mass or take up any space.
10.
which of the following sets of conditions would not be considered Standard Temperature and Pressure
a)
0oC and 1 atmosphere
b)
273 K and 101.3 kilopascals
c)
0oC and 775 millimeters of mercury
d)
All of these sets of variables are considered to be STP
11.
There are 3.0 moles of an ideal gas in a container. What is the volume of this ideal gas if the pressure of the gas is 2.0 atm and the temperature is 100oC?
a)
12 L
b)
46 L
c)
17 L
d)
67 L
12.
Jacques Charles contributed to our understanding of gases by describing the relationship between -
a)
pressure and volume
b)
volume and temperature
c)
volume and number of moles
d)
pressure and temperature
13.
If the pressure exerted on a confined gas is doubled, then the volume of the gas —
a)
increases four times
b)
decreases by one-fourth
c)
is doubled
d)
is halved
14.
Which volume will be occupied by a gas containing 6.02 x 1023 atoms at STP?
a)
1.0 L
b)
11.2 L
c)
22.4 L
d)
44.8 L
15.
A gas cylinder is filled with 4.00 moles of oxygen gas at 300.0 K. The piston is compressed to yield a pressure of 400.0 kPa. What is the volume inside the cylinder?
a)
3.19 L
b)
6.25 L
c)
24.9 L
d)
31.5 L
16.
According to Charles’ law, the volume of a fixed amount of gas is directly proportional to —
a)
isoelectric mixture
b)
vapor concentration
c)
barometric pressure
d)
kelvin temperature
17.
A sample of nitrogen occupies 10.0 liters at 25oC and 98.7 kPa. What would be the volume at 20.oC and 102.7 kPa?
a)
7.87 L
b)
9.45 L
c)
10.2 L
d)
10.6 L
18.
A container holds 20.0 grams of neon gas. Under the same conditions, how many grams of xenon would the container hold?
a)
108 g
b)
131 g
c)
262 g
d)
370 g
19.
A balloon is filled with 3.8 L of helium gas at STP. Approximately how many moles of helium are contained in the balloon?
a)
0.17 mol
b)
0.26 mol
c)
72 mol
d)
85 mol
20.
A container is filled with helium gas. It has a volume of 2.25 liters and contains 9.00 moles of helium. How many moles of helium could be held in a 1.85 liter container at the same temperature and pressure.
a)
7.40 mol
b)
10.9 mol
c)
0.463 mol
d)
37.5 mol
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