Answer:
Magnetite- 3:4
Hematite-2:3
Step-by-step 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.