A piston cylinder device contains 2.5 kg of carbon dioxide (CO2) initially at 100 kPa and 300 degrees celsius.The CO2 is then compressed to 200 kPa following a process of Pv^(1.25)=constant. Determine a.) the boundary work needed for this process and b.)the temperature after compression.(Use ideal gas equation; pressure given is absolute and R=0.1889 kJ/kg-K).