Question: An insulated cylinder/piston contains R-134a at 1 MPa, 50C, with a volume of 100 L. The R-134a expands, moving the piston until the pressure in

An insulated cylinder/piston contains R-134a at 1 MPa, 50°C, with a volume of 100 L. The R-134a expands, moving the piston until the pressure in the cylinder has dropped to 100 kPa. It is claimed that the R-134a does 190 kJ of work against the piston during the process. Is that possible?

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