A non flow system undergoes a reversible process according to law p=4.5/v+2 where pressure p is in bar , specific volume v in m3/kg. During this process volume changes from 0.12 m3/kg. if the specific gas constant is 278j/kg-k, find p1 and T1 (in si units) p2 and T2, expansion work done during the process and whether the work is done on the system or BY the system, if the specific heats cp=1000j/kgk and cv=772j/kgk what is the change in internal energy and enthalpy of the gas going from process 1 to process 2.