5) $\text{H}(\text{g}) + \text{N}_2\text{O}(\text{g}) \rightarrow \text{HO}(\text{g}) + \text{N}_2(\text{g})$
$\Delta H$ of this overall reaction is how many kilojoules? (The bond enthalpies of $\text{N}=\text{O}$, $\text{H}-\text{H}$, $\text{N}=\text{N}$ and the average bond enthalpy of $\text{H}-\text{O}$ are respectively 607, 436, 944, and 463 kJ/mol.)
\hspace{1cm} 1) $-216$ \hspace{2cm} 2) $+216$ \hspace{2cm} 3) $+750$ \hspace{2cm} 4) $-750$