A converging-diverging nozzle operating at steady state has a throat area of 3 cm^2 and an exit area of 6 cm^2. Air as an ideal gas with k = 1.4 enters the nozzle at 8 bar, 400 K, and a Mach number of 0.2 and flows isentropically throughout. If the nozzle is choked and the diverging portion acts as a supersonic nozzle, determine the mass flow rate, in kg/s, the Mach number, pressure, in bar, and temperature, in K, at the exit. Repeat if the diverging portion acts as a subsonic diffuser