Question

Iron combines with oxygen to produce rust according to the following reaction.

4Fe + 3O2 subscript→ rust

Based on the law of conservation of mass, which could be the product of the reaction?

(1 point)
Responses

3FeO2subscript
3FeO 2 subscript

4FeO2subscript
4FeO 2 subscript

Fe2subscriptO3subscript
Fe 2 subscript O 3 subscript

2Fe2subscriptO3

Answer 1

In the reaction provided, iron (Fe) combines with oxygen (O2) to form rust. The correct chemical equation for the formation of rust is:

4Fe + 3O2 → 2Fe2O3

Rust is mainly composed of iron(III) oxide, which is represented by the chemical formula Fe2O3.

Based on the options provided, the product of the reaction that corresponds to rust is:

**Fe2O3 (Iron(III) oxide)**

So the correct answer is:

**Fe2O3 subscript** (Fe2O3)