A substance has a melting point of -25.0°C, an enthalpy of fusion of 1200 J g^-1,and specific heats for the solid and the liquid are 3.00 and 6.20 J g^-1 °C^-1, respectively. How much energy is needed to change 150 grams of the substance from a solid at -40.0°C to a liquid at +70.0°C?

Question

Quizplus · Accepted Answer

The Answer of A substance has a melting point of -25.0°C, an enthalpy of fusion of 1200 J g^-1,and specific heats for the solid and the liquid are 3.00 and 6.20 J g^-1 °C^-1, respectively. How much energy is needed to change 150 grams of the substance from a solid at -40.0°C to a liquid at +70.0°C?

A Substance Has a Melting Point of -25