A1.11 g sample of caffeine, c8h10n4o2, burns in a constant-volume calorimeter that has a heat capacity of 7.85 kj/k. the temperature increases from 298.70 k to 303.81 k. what is the molar heat of combustion of caffeine (in
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Ответ:
401135 kJ
Explanation:
From the balanced quation,
(q/n) = CΔE
Molar heat of combustion = 7.85kJk × (303.81-298.70)k
= 7.85kj × 5.11
= 40.1135kj
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