Calculate the heat absorbed when 50 g of copper is heated from 25°C to 125°C at constant volume. (Cv = 22.6 J/mol·K, mol

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Calculate the heat absorbed when 50 g of copper is heated from 25°C to 125°C at constant volume. (Cv = 22.6 J/mol·K, molar mass = 63.5 g/mol)

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2.26 kJ 0.89 kJ 22.6 kJ 1.78 kJ Correct

Moles = 50 / 63.5 = 0.7874 mol, Δ T = 125 - 25 = 100 K, qv = nCvΔ T = 0.7874 × 22.6 × 100 = 1779.5 J = 1.78 kJ.

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