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The rule of Dulong and Petit states that the molar heat capacities of the metallic elements...

The rule of Dulong and Petit states that the molar heat capacities of the metallic elements are approximately constant. Estimate the value of this constant by calculating the molar heat capacities of the following metals from their specific heats and taking the average.

Metal Specific heat
J g-1 K-1
Molar heat capacity
J mol-1 K-1

zinc

0.388

copper

0.385

zirconium

0.278



Average: _________ J mol-1 K-1

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