1- Saturated water vapor at 160C ina piston/cylinder arrangement of initial volume 0.02 m. The steam now expands in a polytropic process with exponent n = 1 to a final pressure while it does work against the piston. Assume a value for the final pressure between 165 and 265 kPa and, a-State any other assumptions you have made for this process. b- Determine the work and heat transfer in this process.