A quantity of ice at 0C is added to 66.4 g of water in a glass at 55C. After the ice melted, the temperature of the water in the glass was 15C. How

A quantity of ice at 0°C is added to 66.4 g of water in a glass at 55°C. After the ice melted, the temperature of the water in the glass was 15°C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(g·°C).