Question

Can someone explain this question to me??

Answer 1

you have to work backwards, first find the moles of Fe corresponding to that mass.

Next, use the stoichiometric ratios to relate the moles (n) of Fe to the moles of CO.

\(\sf \Huge \dfrac{n_{CO}}{3}=\dfrac{n_{Fe}}{2}\)

note that the stoichiometric coefficient of each species is underneath the moles.

now plug moles of Fe and solve for moles of CO.

Next, convert moles to mass.