A system absorbs 186 kJ of heat and the surroundings do 120 kJ of work on the system. What is the change in internal energy of the system? Express the internal energy in kilojoules to three significant figures.

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Gió Share
Jun 29, 2017

I got an increas of $306 k J$ in internal energy.

Explanation:

I used the 1st Law and the sign convention to get:

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