A sample of a gas is expanded to twice its original volume while its temperature is held constant. Relative to their original average energy, the new average energy of the molecules is
A) half as great.
B) the same.
C) twice as great.
D) four times as great.

Question

Quizplus · Accepted Answer

When a gas is expanded while its temperature is held constant, the molecules do not gain or lose energy, they simply move farther apart. Therefore, the average energy of the molecules remains the same.

A Sample of a Gas Is Expanded to Twice Its