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AP® Physics 1 & 2

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Changes in Entropy: Isobaric Compression

APPH12-QKKWNY

Created for Albert.io. Copyright 2016. All right reserved.

A cylindrical container has a frictionless moveable lid and is filled with an ideal gas. The container is placed on a cold reservoir. The gas undergoes a slow isobaric compression as the lid of the container moves down.

Which statements are correct concerning this process? Select TWO answers.

A

The entropy of the gas increases.

B

The entropy of the gas and reservoir system increases.

C

The molecules of the gas now have fewer possible ways to arrange themselves.

D

The molecules of the gas are moving faster because the lid did work compressing against the gas.