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Calorimetry: Heat of Fusion of Ice Procedure In a 250 mL beaker, heat about 125mL of water to a temperature of about 50oC. Measure exactly 100mL of this heated water in a graduated cylinder and pour it into a Styrofoam cup. Record this volume of water. Measure accurately and record the temperature of the water. Immediately add 2-3 ice cubes. Stir the mixture carefully. The cup should contain ice at all times. If the last of the ice is about to melt, add another ice cube. Monitor the temperature of the mixture as you stir. Continue stirring until the temperature no longer drops. Record this final temperature. Carefully remove the unmelted ice. Allow any water removed to drain back into the cup. Measure and record the volume of the water in the cup. Discussion: 1. In what way does calorimetry make use of the law of conservation of energy? 2. Use the following terms: exothermic, endothermic, heat of fusion, specific heat 3. Is the process of melting exothermic or endothermic? Give evidence to support your answer. 4. Discuss is the difference between heat and temperature?