In a thermally insulated evacuated vessel with a volume V = 11 l, a piece of ice with a mass of M1 = 1 kg and a piece of copper with a mass of M2 = 3 kg were placed next to it. Ice temperature T0 = 273° K. Determine the initial temperature of copper if at the end of the process the temperature in the vessel is T1 = 373 K. Heat capacity of copper Ccm = 376 J/kg deg. Melting heat of ice R = 3.34 105 J/kg; heat of vaporization of water q = 2.26 • 106 J/kg. The change in water volume can be neglected.

Detailed solution. Format gif