An insulated cylinder/piston contains R-134a at 1 MPa, 50C, with a volume of 100 L. The R-134a

Question:

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?