22. The First Law of Thermodynamics
Heat Equations for Special Processes & Molar Specific Heats
4:50 minutes
Problem 19.95
Textbook Question
Textbook QuestionAt very low temperatures, the molar specific heat of many substances varies as the cube of the absolute temperature:
C = k (T³ / T³₀)
which is sometimes called Debye’s law. For rock salt, T₀ = 281 K and k = 1940 J/mol · K. Determine the heat needed to raise 2.75 mol of salt from 22.0 K to 46.0 K.
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