A compression process is carried out in a cylinder containing nitrogen of mass 0.3 kg, pressure 100 kPa, temperature 40°C to 1 Mpa, 140°C. Work done on the system is 30 kJ, (Take Cv = 0.7 kJ/kg-K). What is the amount of heat released during the process?
1
13 kJ
2
9 kJ
3
7 kJ
4
3 kJ