Refrigerant 134a: T= 20°C V = 0.05397 m/kg On the Triple Line O Saturated Vapor Saturated Liquid O Critical Point O Superheated Vapor O Compressed Liquid

I need help with the diagnrams for this thermo practice problem  2 kg of air in a piston cylinder initially at P1=101 kPa, T1= 300 K undergoes a cycle made up of three processes: 1-2 Isothermal compression until the volume is (1/15) of its original value.2-3 Constant Pressure heating3-1 Isentropic Expansion back to the initial state Assume air is an ideal gas with constant specific heats with the following values: Cpo=1.027kJ/kgK; Cvo= 0.740 kJ/kgK; R=0.287 kJ/kgK; ɣ=1.388 Sketch this cycle on a P-v diagram and on a T-s diagram, clearly indicating all state points and the three processes.

Calculate the compressor work in kJ required to compress 1 kg of an ideal gas from an initial volume and pressure of 0.65m3 and 101.3kpa to a final pressure of 517kpa. Compression is with n=1.35. A. 133.6           B. 105.8            C. 148.3           D. 142.7

I can't Figure out this? 1.83 Wrong.