Chapter 11:
Behavior of Gases
Practice Test
1.
A gas exerts a force of 18.0 N over a surface area of 3.00 m
2
. What pressure does the gas exert?
a.
18.0 Pa
b.
56.0 lb/in
2
c.
0.167 atm
d.
6.00 Pa
Hint
2.
Volume constant, the pressure of a confined gas is directly proportional to the ______________.
a.
Kelvin temperature
b.
Celsius temperature
c.
size of the container
d.
molecular mass of the gas
Hint
3.
__________ law relates pressure and volume, temperature constant.
a.
Gay-Lussac's
b.
Dalton's
c.
Boyle's
d.
Charles's
Hint
4.
____________ is the pressure that supports a 760-mm column of mercury.
a.
One meter
b.
One pascal
c.
One lb/in
2
d.
One atmosphere
Hint
5.
6.0 L of a gas exerts a pressure of 2.5 atm. When the pressure is increased to 10.0 atm, the gas volume is ____________.
a.
1.0 L
b.
1.5 L
c.
25 L
d.
1.7 L
Hint
6.
The set of conditions 1.00 atm pressure and 0.00
o
C is defined as ________.
a.
the melting point of air
b.
room conditions
c.
the boiling point of water
d.
standard temperature and pressure
Hint
7.
A balloon is filled with 10.0 L of oxygen at 27
o
C. If the temperature of the gas in the balloon increases to 127
o
C, the pressure remains constant, and the balloon does not break, what is its new volume?
a.
47.0 L
b.
13.3 L
c.
133 L
d.
6.7 L
Hint
8.
A _____________ is a device used to measure gas pressure.
a.
barometer
b.
anemometer
c.
balance
d.
thermometer
Hint
9.
Temperature constant, 20.0 L of gas at 844 mm Hg pressure expands to 40.0 L. What is the new pressure?
a.
1.33 atm
b.
16 900 mm Hg
c.
3.75 kPa
d.
422 mm Hg
Hint
10.
__________ is a model of gas behavior that is valid over a wide range of conditions.
a. An ideal gas
b. The gas hypothesis
c. Pressure
d. Volume
Hint
11.
Temperature constant, the pressure in a gas-filled container is directly proportional to the _______________________.
a.
number of gas particles within
b.
volume of the container
c.
molecular mass of the gas
d.
surface area of the container
Hint
12.
The ___________ method is commonly used to convert measurements to other units.
a.
factor label
b.
division
c.
triginometric
d.
multiplication
Hint
13.
What is the volume of 44.6 L of CO
2
initially at 455 K and 3.66 atm when the conditions change to STP?
a.
682 L
b.
97.9 L
c.
22.4 L
d.
0.557 L
Hint
14.
If all three substances are at the same temperature and pressure, 0.120 L of N
2
gas reacts with 0.360 L of H
2
gas to form _________ of NH
3
gas.
a.
0.240 L
b.
0.480 L
c.
0.100 L
d.
22.4 L
Hint
15.
In the combined gas law, the _________________ is held constant.
a.
pressure
b.
temperature
c.
volume
d.
number of gas particles
Hint
16.
A soda straw functions as __________________ the liquid up the straw.
a.
air pressure pulls
b.
air pressure pushes
c.
reduced pressure draws
d.
sucking draws
Hint
17.
____________________ states that equal volumes of gases at the same temperature and pressure contain equal numbers of particles.
a.
Avogadro's principle
b.
Boyle's law
c.
Charles's law
d.
The ideal gas law
Hint
18.
Charles's law states that at constant pressure, the volume of a gas is _____________________ temperature.
a.
inversely proportional to the Celsius
b.
inversely proportional to the Kelvin
c.
directly proportional to the Kelvin
d.
directly proportional to the Celsius
Hint
19.
The volume of a sample of helium gas is 4.80 L at 125
o
C and 99.8 kPa. If the volume decreases to 3.20 L and pressure remains 99.8 kPa, what is the new temperature?
a.
273 K
b.
-8
o
C
c.
265
o
C
d.
422
o
F
Hint
20.
A sample of of N
2
gas occupies .500 L at 555 mm Hg and 62
o
C. If its volume and temperature change to 0.400 L at 122
o
C, respectively, what is its new pressure?
a.
818 mm Hg
b.
422 mm Hg
c.
1320 mm Hg
d.
0.763 mm Hg
Hint
