The Ideal Gas Law — Test Answers

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The particles of a gas inside a balloon are experiencing an increase in their average kinetic energy and the number of collisions with the wall of the balloon. What is the most likely outcome?

A
higher gas pressure inside the balloon
B
higher air pressure outside the balloon
C
a decrease in gas temperature inside the balloon
D
a large increase in air temperature outside the balloon
22
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The volume of a gas is 0.450 L when its pressure is 1.00 atm. If the temperature of the gas does not change, what is the pressure when its volume is changed to 2.00 L?Use .

Question illustration
A
0.225 atm
B
0.444 atm
C
2.25 atm
D
4.44 atm
23

Which best defines partial pressure in a mixture of gases?

A
pressure that is exerted by all the gases of a mixture on the container
B
pressure that is exerted by one gas as if it occupied a container by itself
C
half of the pressure that is exerted by the gases of a mixture on the container
D
sum of the individual pressures that are exerted by two or more gases
24

A substance is tested in a lab. It is found to maintain a unique shape and is a good conductor of electricity. If it is made up of electrons, protons, and neutrons, what state of matter is this substance most likely to be?

A
gas
B
liquid
C
plasma
D
solid
25

Considering the temperature vs. time graph below, how does the temperature at the beginning of a change of state compare with the temperature at the end of the change?

Question illustration
A
The temperature is always lower.
B
The temperature is always the same.
C
The temperature is usually lower.
D
The temperature is usually higher.

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