Which of the following is a valid mole ratio from the balanced equation 2fe2o3 + 3c → 4fe + 3co2?
two moles of f e two o three over four moles of f e
four moles of c over three moles of f e
two moles of f e two o three over four moles of c
three moles of c over four moles of c o two

Two moles of Fe2O3 over four moles of Fe is a valid mole ratio from the given balanced equation.

Explanation:

This is because in the balanced equation there are 2 Fe2O3's and 4 Fe's.

If we wanted to get the moles of Fe2O3 from the moles of Fe, all we have to do is multiply by two moles of Fe2O3 over four moles of Fe (2/4) to get the correct answer.

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