A 25.0-g sample of copper (molar mass = 63.5 g mol⁻¹) is warmed from 20.0 °C to 35.0 °C

CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics

Problem

A 25.0-g sample of copper (molar mass = 63.5 g mol⁻¹) is warmed from 20.0 °C to 35.0 °C. The molar heat capacity of copper is 24.4 J mol⁻¹ K⁻¹. What quantity of energy is absorbed by the copper sample? (a) −1.44×102 J-1.44 \times 10^{2}\ \text{J} (b) 5.28×102 J5.28 \times 10^{2}\ \text{J} (c) 1.44×102 J1.44 \times 10^{2}\ \text{J} (d) 9.15×103 J9.15 \times 10^{3}\ \text{J}

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