A cycle using 1 kg of ammonia initially a saturated liquid a

A cycle using 1 kg of ammonia, initially a saturated liquid at 10 bar, as a working fluid consists of 5 processes. The net internal energy change of the ammonia for the cycle: depends on the process is u_f of the ammonia depends on integral pdV is zero A gas undergoes a process at a constant temperature of 400 K. Its initial volume is 0.3 m^3 and its final volume is 0.1 m^3 What is the work done? 36 kJ -36 kJ 0.2 kJ Not enough information given to determine

Solution

9.net internal energy of any cyclic process is zero.. Ans : iv

10.we need any pressure(I,e.initial or final) Or type of gas or mass if gas... Ans: iv