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The bond dissociation energies for a F-F bond, for the double bond of ethene, and for...

The bond dissociation energies for a F-F bond, for the double bond of ethene, and for a C-F bond are 38, 62, and 115
kcal/mol, respectively. Which statement correctly describes the addition of F2 to ethene?

a.) exothermic by 15 kcalmol
b.) exothermic by 130 kcal/mol
c.) exothermic by 330 kcal/mol
d.) endothermic by 130 kcal/mol
e.) endothermic by 15 kcal/mol

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