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Thermodynamics Problem. Please show all work.

A piston-cylinder assembly contains superheated water vapor at 400 kPa and 150°O, and undergoes an adiabatic process to a final state at 275 kPa with internal energy 2506.8 kJ/kg. 3. What is the final temperature of the system? What is the work done for this process? Specify whether the work is from the system to the surroundings or vice versa a. b.

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