Repeat Prob. 17-111 assuming air is cooled in the amount of 55 kJ/kg. Prob. 17-111 Air enters

Question:

Repeat Prob. 17-111 assuming air is cooled in the amount of 55 kJ/kg.
Prob. 17-111
Air enters a rectangular duct at T1 5 300 K, P1 = 420 kPa, and Ma1 = 2. Heat is transferred to the air in the amount of 55 kJ/kg as it flows through the duct. Disregarding frictional losses, determine the temperature and Mach number at the duct exit.