A container is divided into two chambers that are separated by a valve. The left chamber contains one mole of a monatomic ideal gas. The right chamber is evacuated. At some instant, the valve is opened and the gas rushes freely into the right chamber. Which one of the following statements concerning this process is true?

Question

Quizplus · Accepted Answer

Since the gas expands into a vacuum, no work is done. Additionally, as an ideal gas expands into a vacuum, its internal energy does not change. The temperature and entropy of the gas can both increase or decrease depending on the specifics of the situation, but these are not guaranteed outcomes. Finally, there is no reason for the walls of the containing vessel to get colder.

A Container Is Divided into Two Chambers That Are Separated