Adiabatic Converging Nozzle - GATE '97 ME

Air enters a frictionless adiabatic converging nozzle at 10 bar, 500 K with negligible velocity. The nozzle discharges to a region at 2 bar. If the exit area of the nozzle is 2.5 cm2, find the flow rate of air through the nozzle. Assume for air, Cp = 1005 J/kg.K and Cv = 718 J/kg.K.