Question

Fill the graduated cylinder with hot tap water and let stand for one minute. Pour water into the sink. Measure 70 mL of hot water. Pour the water into the foam cup. Measure the temperature of the water. Add an ice cube to the cup of water. Gently swirl the cup. Measure the temperature of the water as soon as the ice cube has completely melted. Pour the water into the graduated cylinder and measure the volume. The initial temperature of the hot water was 54.9 degrees Celcius and the final temperature after the ice cube is 18.3 degrees Celcius.

Questions:

1. Determine the mass of the ice.

2. Calculate the amount of heat transferred from the water to the ice.

3. Determine ∆Hfus of ice (kJ/mol) by dividing the heat transferred from the water by the moles of ice melted.

4. Compare your experimental value of ∆Hfus of ice with the accepted value of 6.01 kJ/mol. Account for any error.

(Thank you so much for your help, I appreciate it!)

Answer 1

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