Given what we know about wüstite, what are the iron-to-oxygen ratios for hematite and magnetite

Magnetite - 3:4

Hematite-2:3

Explanation:

Hematite is an ore of iron. Its chemical formula is Fe₂O₃. It means there are 2 iron atoms per 3 oxygen atoms. The ratio of iron-to-oxygen is 2:3.

Magnetite is also an ore of iron. Its chemical formula is Fe₃O₄. It means there are 3 Iron atoms per 4 oxygen atoms. The ratio of iron-to-oxygen is 3:4.

The mineral form of iron II oxide is known as wüstite. Hematite (69.9% Fe) and Magnetite (72.4% Fe) are two other examples of iron oxide. Magnetite has naturally high iron content than Hematite.

iron-to-oxygen ratios of

Hematite

3.79 g of Fe and 1.63 g O

and

Magnetite

22.8 g Fe and 8.70 g O

where Fe symbolise iron and O symbolise oxygen.