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.Step 1: Calculate the number of moles of iceThe molar mass of water H2O is 18.015 g/mol. Number of moles = mass / molar massNumber of moles = 50 g / 18.015 g/mol = 2.776 molesStep 2: Calculate the heat required using the enthalpy of fusionHeat required = number of moles enthalpy of fusionHeat required = 2.776 moles 6.01 kJ/mol = 16.681 kJTherefore, the amount of heat required to melt 50 grams of ice at 0C and convert it into liquid water at the same temperature is 16.681 kJ.