Pennies Used to Be Made of Copper, but Now They

question 21

Multiple Choice

Pennies used to be made of copper, but now they are made of copper-coated zinc. If one were to do a precise calorimetry experiment to determine the specific heat of the new pennies, what would be the result to be?

• A) It would be that of copper since copper is on the outside.
• B) It would be that of zinc since zinc is in the center.
• C) It would be the sum of the copper and zinc specific heats.
• D) It would be between that of copper and that of zinc, depending on coating thickness.

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