1. The problem statement, all variables and given/known data A Carnot engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. When 6437 J of heat is put into the engine and the engine produces work, how many kilograms of ice in the tub are melted due to the heat delivered to the cold reservoir? 2. Relevant equations Q=m*(deltaHf) efficiency=1-(T_cold/T_hot) 3. The attempt at a solution Searching online, I found those equations but nothing is working for me. With the efficiency, I found: 1-(273/373)=0.268 And the heat of fusion for water is 3.34E5 J/kg What am I missing?