Question: A cylinder fitted with a piston restrained by a linear spring contains 1 kg of R-12 at 100C, 800 kPa. The spring constant is 50kN/m,

A cylinder fitted with a piston restrained by a linear spring contains 1 kg of R-12 at 100C, 800 kPa. The spring constant is 50kN/m, and the piston cross-sectional area is 0.05 m2. A valve on the cylinder is opened and R-12 flows out until half the initial mass is left. Heat is transferred so the final temperature of the R-12 is 10C. Find the final state of the R-12, (P2, x2), and the heat transfer to the cylinder.

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