A process under development involves the expansion in an insulated piston-cylinder of water vapor initially occupying 0.15m3 at 400 kPa and 200C. At the end of the expansion, a first sensor indicates that the piston extracts 30 kJ of work, while a second sensor indicates the presence of a liquid in the piston (therefore, biphasic mixing). Check if this evolution is physically possible, or if possibly one of the sensors is incorrectly calibrated. (Hint: In a biphasic state, what is has more entropy, saturated vapor or saturated liquid?