Question: The decrease in internal energy of a 1 . 2 5 - kg ideal gas is 3 4 5 kJ when the pressure decreases from

The decrease in internal energy of a 1.25-kg ideal gas is 345 kJ when the pressure decreases from 690 KPaa to 138 kPaa and the volume decreases from 0.05 m^3 to 0.14 m^3. The cv=0.6188 kJ/kg-K.
A. Determine the change in enthalpy
B. Find the initial temperature
C. What is the final temperature?
D. Determine the value of Cp.

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