1. 200 g of water at 30°C are mixed with 20 g of silver at 350°C. Find the final temperature of the system.

For a process taking place in a closed system containing gas, the volume and pressure relationship is pvi-constant. -1.5 bar, the process starts with initial conditions, pi = =0.03 m3 and ends with final volume, v2-0.05 m3 determine the work done by the gas.