(Note That Some of These Are the Same Problems as Found

(Note that some of these are the same problems as found in the section headed Enthalpies of Atom Combination. However in this section all problems are worked using Enthalpies of Formation.)
-What is the magnitude of the enthalpy of reaction in the previous question?

A) less than 1000 kJ/mol_rxn
B) between 1000 and 1250 kJ/mol_rxn
C) between 1250 and 1500 kJ/mol_rxn
D) between 1500 and 1750 kJ/mol_rxn
E) more than 1750 kJ/mol_rxn