Hematite has 2 iron atoms, and 3 oxygen atoms. The average weight of an iron atom is 55.845 amu The average weight of an oxygen molecule is about 16 amu. So, the weight of the entire molecule is 159.69, but the weight of the iron part of it is 111.69. Now just multiply 111.69/159.69 x 1 KG to find out how much the iron part of it weighs. It weighs .699417 kilograms, or 699.417 grams. That's how much iron you can extract.
don't eat food during experiments wear gloves if using dagerous materials
