A diffuser is a steady-state steady flow device in which a fluid flowing at high velocity is decelerated in such a way that the pressure increases during the process. Consider a diffuser in which air enters at 120 kPa, 30°C, with a velocity of 200 m/s and exits with a velocity of 20 m/s. Assuming that the process is reversible and adiabatic and that air is an ideal gas, what are the exit pressure and temperature of the air in kPa and °C respectively?