Question

A gas in a cylinder is held at a constant pressure of 2.30×105 Pa and is...

A gas in a cylinder is held at a constant pressure of 2.30×105 Pa and is cooled and compressed from 1.80 m3 to 1.10 m3 . The internal energy of the gas decreases by 1.35×105 J .

Part A

Find the work done by the gas.

Express your answer in joules.

Part B

Find the amount of the heat that flowed into or out of the gas.

Express your answer in joules to two significant figures.

Part C

State the direction (inward or outward) of the flow.

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Homework Answers

Answer #1

Use first law of thermodynamics to find the required work done and amount of heat flown as shown below. The work done is negative because the volume decreases and work done by the gas becomes negative.

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