A closed system with pressure of 100 kPa and temperature of 50C contains 4 grams of Helium (ideal gas). The system goes under diabetic to reach 200 kPa. a) Calculate the work done by the system. b) Find initial volume, final volume and final temperature CP = 5.2 kJ/kg.K CV= 3.2 kJ/kg.K R= 2.07 kJ/kg.K