(Answered) Calculate the change in internal energydelta e for a system

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Calculate the change in internal energy(delta E) for a system that is giving off 25.0kJ of heat and is changing from 6.00L to 12.00L in volume at 1.50atm pressure. (101.3J=1 L*atm)

The answer is supposed to be -25.9kJ

Can someone please explain the process?

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