The decomposition of dinitrogen tetraoxide (N2O4) into nitrogen gas (N2) and oxygen gas (O2) is shown by which balanced chemical equation?

a. N2O4 → N2 + O2
b. N2 + 2O2 → N2O4This answer is incorrect.
c. N2O4 → N2 + 2O2
d. N2O4 + 2O2 → N2