The initial internal energy of a system is 53.5 kJ. It performs 2.8 kJ of work and absorbs 6.9 kJ as heat. What is its final internal energy?
回答 (1)
2016-06-26 12:41 am
53.5 kJ - 2.8 kJ + 6.9 kJ = 57.6 kJ
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