Answer to Question #83457 in General Chemistry for stephanie

Question

A certain substance has a specific heat of 0.355 J/g °C for the solid, a specific heat of 0.552 J/g °C for the liquid, and a melting point of 843 °C. A 14.3 gram sample of the substance required 4.35 kJ of energy to change its temperature from 825 °C to 853 °C. (a) What was the heat of fusion for the substance in cal/g.


(b) If energy was being added to the substance at a rate of 15 J/s, how many minutes would it take for 6.25 g of the substance to melt?