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**1. Homework Statement**

A mass of 5 kg of steam is contained within a piston cylinder assembly. The steam undergoes an expansion from its initial state with e1 = 3000 kJ/kg to its final state with e2 = 2500 kJ/kg. During the process there is a heat transfer of 80 kJ to the steam. Also, a paddle wheel transfers 10 kJ of work to the steam. Calculate the amount of energy transfer by work from the steam on the piston during the process.

**2. Homework Equations**

dE = del Q - del W

**3. The Attempt at a Solution**

Would this be correct?

W = del Q - dE

= (80kJ + 10kJ) - (2500 kJ/kg - 3000 kJ/kg)

W = 590 kJ

I don't believe this is correct but it's all I have been able to come up with so far. Any guidance is appreciated