See explanation below.
Work Step by Step
Molar entropy increases with increasing molecular complexity NO2(g) > NO(g) > N2(g) As number of atom increases molar entropy increases Fe3O4(s) > Fe2O3(s) > Al2O3(s) Here there are two case. Fe3O4(s) > Fe2O3(s) because molecualr complexity of Fe3O4(s) is more than Fe2O3(s). Fe2O3(s) > Al2O3 because size of iron is more than Aluminium (heavier atom has higher molar entropy)