x = 5

3) An ideal gas which is kept at 5x0 K and 9 bar in a closed system is subjected to a process involving two paths. In the first path, pressure is decreased isothermally to 3.5 bar and in the second path, pressure further decreases to 2.2 bar at constant volume. Calculate Q. W, AU and AH for each path. Draw the PV diagram of the process. Take, Cp = (7/2)R. Show your work! X: Last digit of your student ID. 200706045 should use 550