Question

Plz help quick
Which of these equations shows rust, Fe2O3, forming when oxygen, O2, reacts with iron, Fe?


2Fe2O3 + 4Fe → 3O2



4Fe → 3O2 + 2Fe2O3


3O2 + 4Fe → 2Fe2O3


2Fe2O3 → 3O2 + 4Fe

Answer 1

Answer:

3

Explanation:

If oxygen reacts with iron, then both must be reactants and rust the product of that reaction

Answer 2

Answer:

4Fe → 3O2 + 2Fe2O3

Explanation:

We see that the equation balances

There are  4 atoms of Iron (Fe) on the left and 2*2 = 4 on the right.

3 * 2 = 6 of oxygen on the left and 2 * 3 = 6 on the right.