Air at 80 kPa and 127C enters an adiabatic diffuser steadily at a rate of 6000 kg/h

Question:

Air at 80 kPa and 127°C enters an adiabatic diffuser steadily at a rate of 6000 kg/h and leaves at 100 kPa. The velocity of the air stream is decreased from 230 to 30 m/s as it passes through the diffuser. Find
(a) The exit temperature of the air and
(b) The exit area of the diffuser.