Final answer:
By using stoichiometry and assuming the correct balanced equation for the reaction between FeO and O2 is 3FeO + O2 -> Fe3O4, we can determine that 1 mole of O2 will react with 3 moles of FeO to produce 1 mole of Fe3O4.
Step-by-step explanation:
To answer this, we need a balanced equation for the reaction between FeO and O2. Unfortunately, the provided information does not give us the relevant balanced equation directly, but it implies the reaction between iron (III) oxide (Fe2O3) and sulfur trioxide (SO3), showing that stoichiometry can be used to find the mole ratios.
The balanced chemical equation for the formation of Fe3O4 from FeO and O2 would be written as:
3FeO + O2 → Fe3O4. We see that 1 mole of O2 reacts with 3 moles of FeO to produce 1 mole of Fe3O4. Hence, reacting 1 mole of O2 will yield 1 mole of Fe3O4, assuming that FeO is in excess.