Aclosed piston-cylinder device initially contains one kilogram of water vapor at an absolute pressure of 3 bar and a temperature of 160 c (state 1). heat transfer occurs so that the water vapor expands via a process during which pv^(1.2) = constant and the absolute pressure inside the cylinder drops to 1 bar (state 2). (a) determine the initial and final specific volume (m3 /kg) of water.(b) calculate the work (kj) during the process.(c) find the heat transfer (kj) during the process.(d) show the expansion process on t-v diagram. label states, show property values, and indicate appropriate lines of constant pressure.