SAT Subject Physics Practice Question 351: Answer and Explanation

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Question: 351

47. Which of the following best describes the condition of an enclosed gas during an isothermal expansion?

A. The gas remains at constant pressure.
B. The gas remains at constant volume.
C. The gas remains at constant temperature.
D. The gas remains at constant density.
E. The gas remains at constant molarity.

Correct Answer: C

Explanation:

The correct answer is (C). An isothermal process is a process in which the temperature of the system remains constant.

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