Incompressible substances A and B are placed in a thermal contact in a rigid insulated container. Initially they have a mass, specific heat and constant volume, enthalpy and temperature. For A this would be MA,CvA,ehA,TA. .Derive expressions for final temperature of the system as a function of : (a) The specific heats, masses , and initial temperatures ?(b) The enthalpies and masses (c) Show heat exchange process is probable (d) Under what conditions could your result be invalid Solution.