A cold pack filled with gel, with a mass of 15~g, is frozen. It's placed in 1000.0~g of water at 50⁰C. When the ice pack is completely thawed, the water is at 22⁰C. What is the enthalpy of fusion of the ice pack? (HintThis problem combines the ideas of calorimetry from Practice 7.2~B with the ideas of enthalpy of fusion from this section.)
