Question

Part I insulation A sealed cylindrical pump contains one mole of an ideal gas. The piston fits tightly so that no gas escapes, but friction is negligible between the piston and the cylinder walls. The pump is thermally insulated from its surroundings. The piston is quickly pressed inward as indicated in the diagram. Question 1. Will the temperature of the gas increase, decrease, or remain the same? the temperature of the gas will increase the temperature of the gas will decrease O the temperature of the gas will remain the same not enough information is given to determine the change in temperature Question 2. Explain the reasoning that you used to answer the previous question. Question 3. Is there any heat transfer occurring during this process? If so, identify the direction of the transfer. heat is transferred into the gas during this process O heat is transferred out of the gas during this process O no heat transfer is occuring during this process O not enough informaion is given to determine how heat is transfered Question 4. Explain the reasoning that you used to answer the previous question.

A sealed cylindrical pump contains one mole of an ideal gas. The piston fits tightly so that no gas escapes, but friction is negligible between the piston and the cylinder walls.

The pump is thermally insulated from its surroundings. The piston is quickly pressed inward as indicated in the diagram.

I am not sure how to approach solving this problem. All questions are part of Part 1. Any help would be greatly appreciated!

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Answer #1

Here cylendxical pump is insulated, sa there is no exchange-o-heat betaleen the aire (There Ln--n0_heat transfe r.) As the piston is psassed inward, the gas compresses -e--the-volume-부-fas e-pressuve The piston wl do woxk incre a Aes, theー1stm-taud-4-thermodynamics Erom mamios Since, -d Q 2.0 du +dw (Internal energy changen) There fore temp. increaA

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