Asubstance has a melting point of 20 degrees celsius and a heat offusion of 3.4*10^ 4 J/kg. The boiling point is 150 degrees celsiusand heat vaporization is 6.8*10^ 4 J/kg at a pressure of oneatmosphere. The specific heats for the solid,liquid and gaseousphases are 600 J/kg , 1000 and 400. How much heat is required toraise the temperature 1.90kg of this substance from -4 degreescelsius to 106 degrees celsius at a pressure of oneatmosphere?
