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The reaction of cyanamide, NH2CN(s) with...

The reaction of cyanamide, `NH_2CN(s)` with `O_2` was carried out in a bomb calorimeter and `Delta U` was found to be -742.7 kJ`mol^-1` at 298 K. Calculate enthalpy change for the reaction at 298K.`NH_2CN(s)+3/2O_2(g)rarrN_2(g)+CO_2(g)+H_2O(l)`

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`Delatan(g)=(1+1)-3/2=+1/2`
`DeltaU=-742.7 kJ mol^-1 R=8.314xx10^-3 kJ mol^-1k^-1 DeltaH=DeltaU+DeltanRT=-742.7+1/2xx8.314xx10^-3xx298=-741.5 kJ`
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