A sample of liquid ethanol (density ) is heated from to

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

45.0\,\text{mL}

sample of liquid ethanol (density

0.789\,\text{g mL}^{-1}

) is heated from

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

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

. Given the molar heat capacity of ethanol is

112\,\text{J mol}^{-1}\,^{\circ}\text{C}^{-1}

and its molar mass is

46.1\,\text{g mol}^{-1}

, calculate the heat absorbed by the ethanol in kilojoules.