Question

Fe(s) + O2(g) --> Fe3O4(s)When 13.54 g of O2 is mixed with 12.21 g of Fe, which is the limiting reactant? (SYMBOL of substance only -- Fe, not Iron or Fe(s) )

Answer 1

So, we're given the following reaction:

The first thing we need to do is to balance the equation, such that the number of atoms of each element before and after the reaction occurs is the same. So,

Now, the next step we need to use is to pass all the amounts in grams to moles dividing by the molar mass:

The last step we're going to use is to divide each amount of moles by the coefficients of the reaction. The least result will be the limiting reactant. This is:

The limiting reactant is Fe.