OpenStudy (anonymous):

Which element(s) are not balanced in this equation? Fe2O3 + 3 CO → Fe + 3 CO2 A. Only the Fe is unbalanced. B. Only the O is unbalanced C. Fe and O are both unbalanced. D. C and O are both unbalanced

OpenStudy (zale101):

Fe is not balanced, the reactant has Fe2, and the product has only one Fe. |dw:1412359966779:dw|