Iron metal reacts with oxygen gas to form rust, iron (III) oxide. Which of the following correctly shows the balanced equation for this reaction?

Answer 1

2Fe + 3O2 --> 2Fe2O3

Answer 2

double replacement

Answer 3

2FE+3O2=2FE+2O3 so=2FE2O3

Answer 4

4FE(s)+3O(,2) (g) => 2Fe (,2) O (,3) (s).
Ps the ones with a comma and in parentheses are exponents that go on the bottom

Answer 5

4Fe + 3O2 --> 2FeO3