use the given average bond dissociation energies, d, to estimate δ h for the reaction of methane, ch 4( g), with fluorine according to the equation: ch4(g) 2 f2(g) → cf4(g) 2 h2(g) Given bond dissociation energies: kJ/mol D(CH)=410kJ/mol kJ/mol D(CF)=450kJ/mol kJ/mol D(HH)=436kJ/mol kJ/mol D(FF)=158kJ/mol