Argon in a rigid tank is heated from an initial state of 50 °C, 2 bar and 2m ³ to a final pressure of 8 bar. Determine the final temperature in °C to 2 decimal places.

Question

Argon in a rigid tank is heated from an initial state of 50 °C, 2 bar and 2m ³ to a final pressure of 8 bar.  Determine the final temperature in °C to 2 decimal places. 
Argon cp=0.5203 kJ/kgK cv=0.3122 kJ/kgK