Question

1st law of thermo…

Consider 5kg of steam contained within a piston-cylinderassembly.The steam undergoes an expansion process from aninitial state, with an internal energyUi = 13.550kJ,to a Final state with internal energy Uf =13.295 kJ.During the process, there is a net thermal energy/ heat transferof 80.0 kJ to the steam;additionally apaddle wheel transfers 18.5 kJ of mechanical energy to thesteam.

Determine the mechanical energy transfer, in kJ, during the processfrom the steam to the surroundings…

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