# How do I assess the enthalpy of a combustion reaction, when MORE than one mole of hydrocarbon is combusted?

Enthalpy change, $\Delta H$, is quoted $\text{per mole of reaction as written.}$
$C {H}_{4} \left(g\right) + 2 {O}_{2} \left(g\right) \rightarrow C {O}_{2} \left(g\right) + 2 {H}_{2} O \left(g\right)$, DeltaH=??