Thermodynamics Numerical

It is desired to compress 20 kg of gas from 2.5 m³ to 0.5m³at constant pressure of 20 bar. During this compression process, the temperature rises from 20°Cto 140°C and increase in internal energy is 3500 kJ. Calculate the work done, heat inter action and change in enthalpy during the process. Also, find out the average value of specific heat at constant pressure.