For a particular process, 28 kJ of heat is absorbed and 15 kJ of work is done on the surroundings. What is ΔU?

Name: For a particular process, 28 kJ of heat is absorbed and 15 kJ of work is done on the surroundings. What is ΔU?
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Quizplus · Accepted Answer

The change in internal energy (ΔU) is given by the first law of thermodynamics: ΔU = Q - W, where Q is the heat absorbed by the system and W is the work done by the system on the surroundings. Here, Q = 28 kJ and W = 15 kJ, so ΔU = 28 kJ - 15 kJ = +13 kJ.

For a Particular Process, 28 KJ of Heat Is Absorbed