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CRS Question, 6–19
ANSWER
Choice 1 (although choice 4 might be tastier) is
correct. Since it is given
that one mole of sucrose releases 5 640 kJ, the determination of
the number of moles combusted would enable a ratio to find the kJ
released from 1.525 g (1.525/342.12) ´ 5 640). Then the heat released
by the combustion would be divided by the kJ/°C for the calorimeter;
the result would be the change in temperature.
Section
6.2: Enthalpy and Calorimetry