Question
COURSE: UNIT 3: ACTIVITY 5: ASSIGNMENT: SPH3U ENERGY AND SOCIETY HEAT ENERGY SPECIFIC HEAT CAPACITY PROBLEMS Answer all of the questions below. Be sure to
COURSE: UNIT 3: ACTIVITY 5: ASSIGNMENT:
SPH3U
ENERGY AND SOCIETY
HEAT ENERGY
SPECIFIC HEAT CAPACITY PROBLEMS
Answer all of the questions below. Be sure to show all of the steps in your solutions and to write in complete sentences. When you are finished, submit your work for evaluation.
1. Determine the specific heat capacity of nickel if 740 J of heat is needed to increase the temperature of a 75 g sample from 15 C to 37 C?
2. In attempt to determine the temperature of his campfire, a teacher removes 15 g aluminium pop can (caluminium = 900 J/kgC) that has been sitting in the coals from the fire and places it into a bucket that contains 2.0 L of water (cwater = 4 200 J/kgC) at 18 C; 2.0 L of water has a mass of 2.0 kg. If the final temperate of the water, with the can in it, is 19 C, what was the temperature of the aluminium can when it was in the fire?
3. Plastic and rubber have a much higher specific heat capacity than most metals. Using this bit of information, explain why most kitchen cooking utensils are made of plastic instead of metal, or why kitchen utensils that are made out of metal, usually have rubber handles.
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