Thermo Question, please list all your assumptions, equations used and work neatly. Thanks Three kg of R-134a at 100 and 600 kPa are contained in a piston-cylinder device. The refrigerant expands adiabatically until the pressure is 100 kPa and produces 650 kJ of work output. The surroundings are at 50.

a. Determine the entropy change (kJ/K) of the refrigerant.

b. Determine whether this process is possible