Consider the following balanced chemical equation: Fe2O3 + 3CO → 2Fe + 3CO2 To produce 5.0 moles of CO2, _____ moles of Fe2O3 are required.

Answer 1

 Fe2O3 + 3CO → 2Fe + 3CO2

Use the coefficients to convert from moles to moles

(^{5mol CO2}/₁) × (^1molFe2O3/_{3mol CO2})