6. Given that the enthalpy required to convert CHCl3(g) to gaseous C, H, and Cl atoms is 1397 kJ/mol and that the dissociation enthalpy of a C-H bond is 413 kJ/mol, what is the bond dissociation enthalpy of a C-Cl bond？
(A)328 kJ/mol　
(B)603 kJ/mol　
(C)984 kJ/mol　
(D)1397 kJ/mol

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統計： A(13), B(3), C(3), D(2), E(0) #100433