An adiabatic compressor increases the pressure of 0.75 kg/s of helium from P_1 = 100 kPa and T_1= 300 K to a pressure P_2 of 2000 kPa. Assume helium behaves as an ideal gas with constant specific heat. If the compressor isentropic efficiency is 60%, how much power is required for this process, in kW? Cp = 5.193 kJ/kg-K; Cy- 3.116 kJ/kg-K O 2704 kW O 4507 kW O 1622 kW O 3605 kW