Calculate Hrxn° for the reaction: 
from the following enthalpy of atom combination data.
A) less than -1000 kJ/molrxn
B) between -1000 and -750 kJ/molrxn
C) between -750 and -500 kJ/molrxn
D) between -500 and -250 kJ/molrxn
E) between -250 and 0 kJ/molrxn
Correct Answer:
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