The Temperature of a Gas Sample in a Rigid Container

question 42

Multiple Choice

The temperature of a gas sample in a rigid container is reduced. The pressure the gas exerts on the container walls decreases because

• A) its molecules are in contact with the walls for briefer intervals.
• B) its molecular masses decrease.
• C) its molecules have lower average speeds and so strike the walls less often with less momentum.
• D) its molecules lose less energy each time they strike the walls.

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