Chemistry

Problem

A 25.0 g sample of solid magnesium (molar heat capacity

C_m = 24.5 \,\text{J mol}^{-1}\,\text{K}^{-1}

) is heated from

20.0\,^{\circ}\text{C}

85.0\,^{\circ}\text{C}

. Calculate the quantity of heat absorbed by the sample, in joules.