A sample of iron ore consists only of haematite(Fe2O3) and contains 65% iron, what is the percentage of haematite in the ore?Answer : 92.9%Thanks for any responses.
If there was only Haematite in the ore there would be 69.94% iron (mFe2 / mHaematite). Provided there is only 65% of iron in the sample, so there must be some non-iron compounds in the ore. To find out how many % the Hematite is you take the 65% / 69.94% 92.9%
