The reaction of cyanamide, NH2CN(s), with oxygen was run in a bomb calorimeter, and ΔE was found to be -742.7 kJ/mol of NH2CN(s) at 298 K. Calculate ΔH for the reaction at this temperature.
Reaction: NH2CN (s) + 3/2O2 (g) → N2 (g) + CO2 (g) + H2O (l)
a. -727.8 kJ/mol
b. -737.7 kJ
c. -741.5 kJ
d. -742.7 kJ
e. none of the above
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