Question

name ______________________ sept 19
be prepared for a quiz on friday (sept 19th) coverage: stoichiometry, moles to moles, grams to moles, avogadro’s number, etc.
warm up- limiting reagent notes

1. in the reaction between co and fe₃o₄, solid iron and carbon dioxide gas are produced.

____ co + __fe₃o₄→ __ fe + ____co₂

Explanation:

Step1: Balance oxygen atoms

First, balance the oxygen atoms. In $Fe_3O_4$, there are 4 oxygen atoms. In $CO_2$, there are 2 oxygen atoms. To balance oxygen, we need 4 moles of $CO$ and 4 moles of $CO_2$. So the equation becomes $4CO+Fe_3O_4
ightarrow Fe + 4CO_2$.

Step2: Balance iron atoms

Now balance the iron atoms. There are 3 iron atoms in $Fe_3O_4$. So we need 3 moles of $Fe$. The balanced equation is $4CO + Fe_3O_4
ightarrow3Fe+4CO_2$.

Answer:

4, 1, 3, 4