Air is cooled from 610 K to 280 K. Considering the variability of the specific heats, determine the change in specific internal energy and the change in specific enthalpy for the process. 1.5 kg of...

Air is cooled from 610 K to 280 K. Considering the variability of the specific heats, determine the change in specific internal energy and the change in specific enthalpy for the process.

1.5 kg of air is initially at 25C. The enthalpy of the air is increased by 850 kJ. Considering the variability of the specific heats, determine the final temperature of the air.