To calculate the amount of heat required to melt 50 grams of ice at 0C, we need to first determine the number of moles of ice and then use the enthalpy of fusion to find the heat required.1. Calculate the number of moles of ice:The molecular weight of water H2O is 18.015 g/mol. Number of moles = mass / molecular weightNumber of moles = 50 g / 18.015 g/mol = 2.776 moles2. Calculate the heat required using the enthalpy of fusion:Heat required = number of moles enthalpy of fusionHeat required = 2.776 moles 6.01 kJ/mol = 16.682 kJTherefore, the amount of heat required to melt 50 grams of ice at 0C is 16.682 kJ.