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∆U⊖ of combustion of methane is – X kJ mol–1. The value of ∆H⊖ is
The reaction of cyanamide, NH2CN (s), with dioxygen was carried out in a bomb calorimeter, and ∆U was found to be –742.7 kJ mol–1 at 298 K. Calculate enthalpy change for the reaction at 298 K. NH2CN(g) + 3/2 O2(g) → N2(g) + CO2(g) + H2O(l)
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