To calculate the amount of heat required to melt 50 grams of ice at 0C, we can use the formula:q = n Hfwhere q is the heat required, n is the number of moles of ice, and Hf is the enthalpy of fusion.First, we need to find the number of moles of ice. The molar mass of water H2O is 18.015 g/mol. n = mass / molar massn = 50 g / 18.015 g/moln 2.776 molesNow we can calculate the heat required using the enthalpy of fusion 6.01 kJ/mol :q = n Hfq = 2.776 moles 6.01 kJ/molq 16.681 kJTherefore, approximately 16.681 kJ of heat is required to melt 50 grams of ice at 0C.