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A substance has a melting point of 20 degrees celsius and a heat of fusion of...

A substance has a melting point of 20 degrees celsius and a heat of fusion of 3.4*10^ 4 J/kg. The boiling point is 150 degrees celsius and heat vaporization is 6.8*10^ 4 J/kg at a pressure of one atmosphere. The specific heats for the solid,liquid and gaseous phases are 600 J/kg , 1000 and 400. How much heat is required to raise the temperature 1.90kg of this substance from -4 degrees celsius to 106 degrees celsius at a pressure of one atmosphere?

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