$F{e}_2{O}_3(s)+3CO(g)2Fe(s)+3C{O}_2(g)$

A reaction mixture initially contains $20\mathrm{.}15gF{e}_2{O}_3$ and $17\mathrm{.}68$gCO.

Part A

Once the reaction has occurred as completely as possible, what mass $($in grams$)$ of the excess reactant is left?

Express your answer in grams to three significant figures.

View Available Hint$($s$)$

Mass $=$

$g$