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Problem 18.5 Three different processes act on a system. Part A In process A, 53J

ID: 1266490 • Letter: P

Question

Problem 18.5

Three different processes act on a system.

Part A

In process A, 53J of work are done on the system and 88J of heat are added to the system. Find the change in the system's internal energy.

Express your answer as a whole number.

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Part B

In process B, the system does 53J of work and 88J of heat are added to the system. What is the change in the system's internal energy?

Express your answer as a whole number.

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Part C

In process C, the system's internal energy decreases by 129J while the system performs 129J of work on its surroundings. How much heat was added to the system?

Express your answer as a whole number.

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Problem 18.5

Three different processes act on a system.

Part A

In process A, 53J of work are done on the system and 88J of heat are added to the system. Find the change in the system's internal energy.

Express your answer as a whole number.

?U =   J  

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Part B

In process B, the system does 53J of work and 88J of heat are added to the system. What is the change in the system's internal energy?

Express your answer as a whole number.

?U =   J  

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Part C

In process C, the system's internal energy decreases by 129J while the system performs 129J of work on its surroundings. How much heat was added to the system?

Express your answer as a whole number.

Q =   J  

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Explanation / Answer

A)

Q = delta U + W

delta U = 88 + 53
= 141 J

B)

Q = delta U + W

delta U = 88-53
= 35 J

C)

delta U = -129 J

W = 129 J

Q = 0