Problem: The gas in a piston (defined as the system) is warmed and absorbs 660 J of heat. The expansion performs 349 J of work on the surroundings.What is the change in internal energy for the system?

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The relationship between internal energy, heat, and work is shown in the following equation:

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The gas in a piston (defined as the system) is warmed and absorbs 660 J of heat. The expansion performs 349 J of work on the surroundings.

What is the change in internal energy for the system?

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