Question: An insulated cylinder fitted with a piston contains R-12 at 25C with a quality of 90% and a volume of 45 L. The piston is

An insulated cylinder fitted with a piston contains R-12 at 25°C with a quality of 90% and a volume of 45 L. The piston is allowed to move, and the R-12 expands until it exists as saturated vapor. During this process the R-12 does 7.0 kJ of work against the piston. Determine the final temperature, assuming the process is adiabatic.

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