Need help with this equation! Can anybody lay out an answer please?

Use this equation; 4Fe + 3O2 -> 2Fe2O3.
If 96.0 grams of oxygen react, what mass of iron was oxidized?

A.) 32.0 g
B.) 96.0 g
C.) 167 g
D.) 223 g

Thanks!

Respuesta :

As you can see in the reaction, for each [tex]3O_2[/tex] that reacts, two [tex]Fe_2O_3[/tex] are created.

There are [tex]\frac{96.0}{16}=6mol[/tex] of oxygens reacting, hence [tex]2*6/3=4[/tex] mols of iron will be oxidized, which represents [tex]24*55.8=\boxed{223g}[/tex]