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Students build a rough calorimeter for class using two:

APolished copper bars
BPorcelain dinner plates
CPointed glass rods
DPolystyrene cups
Answer & Solution
Correct answer: D. Polystyrene cups
1. The vessel must not let heat escape fast. 2. Cheap foam cups insulate well enough. 3. Two polystyrene cups do the job. _Source: OpenStax Chemistry 2e, Chapter 5, Thermochemistry._
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