Using the data below, and any other reference at your disposal, determine the standard enthalpy change $(H_{rm})$ for this reaction using two methods.

$($:$2Cl{F}^g\}$

$2Cl{F}_3(g)+2O_2(g)C{l}_{2}O(g)+3F_{2}O(g),H=341\mathrm{.}4KJ$

$2F_2(g)+O_2(g)2F_{2}O(g),H=206\mathrm{.}1KJ$