A cylinder fitted with a frictionless piston that is restrained by a linear spring contains R-22 at 20C, quality 60% with a volume of 8 L. The piston cross-sectional area is 0.04 m2, and the spring constant is 500 kN/m. A total of 62 kJ of heat is now added to the R-22. Verify that the final pressure is around 1600 kPa and find the final temperature of the R-22.