chemistry(show working pls)
Hematite is Fe2O3, so you need to divide the mentioned mass with the molar mass of the mentioned compound. n 40000000 grams / 160 g/mol 250000 moles Since each Fe2O3 particle contains 2 particles of iron, you have 2 x 250000 moles of iron 500000 moles. Next you multiply the number of moles of iron with the molar mass of iron, to get the final mass of the iron that can be obtained from the ore: m (iron) 500000 moles * 55.8 grams/mole 27900000 grams 27900 kilograms 27.9 tonnes. Hope that helped :) Kind regards, Marko.
