Use the most accurate Pz 11. 25 kg of the ideal gas air initially at 150 kPa is compressed to 900 kPa, 2 m in a process where PV = constant, [11] (a) Determine the initial volume (in m). V = m [12] (b) Calculate the work for this process (in kJ). , W = P, V, lu ( P. V, lu (Vz 1000 1-De is flowing through an 80 cm diameter pipe,