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What is Delta E of the system

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A system absorbs 159 kJ of heat, and performs 77 kJ of work on the surroundings. What is  of the system?

Oct 17th, 2017

Initially the system absorbs energy as heat  =  159 kJ 

Then the surroundings do work on the system, so the system gains as heat  =  77 kJ 

The total energy change is E = 159 + 77

    Total Energy changes     =  236 kJ

Apr 11th, 2015

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