Using Hess's law, what is the standard enthalpy of formation, ΔH°f of manganese(II) oxide, MnO(s) ?
A) -520.9 kJ/mol
B) -396.5 kJ/mol
C) -384.9 kJ/mol
D) -147.6 kJ/mol
E) 24 kJ/mol
Correct Answer:
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