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1 gram sample of \( \mathrm{NH}_{4} \mathrm{NO}_{3} \) is decomposed in a bomb calorimeter. The temperature of the calorimeter increases by \( 6.12 \mathrm{~K} \). The heat capacity of the system is \( 1.23 \mathrm{~kJ} / \mathrm{g} \)-deg. What is the molar heat of decomposition for \( \mathrm{NH}_{4} \mathrm{NO}_{3} \) ?
(A) \( -7.53 \mathrm{~kJ} / \mathrm{mol} \)
(B) \( -398.1 \mathrm{~kJ} / \mathrm{mol} \)
(C) \( -16.1 \mathrm{~kJ} / \mathrm{mol} \)
(D) \( -602 \mathrm{~kJ} / \mathrm{mol} \)
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