Use that molar mass to find the number of moles of Fe2O3 you have. Then, you know from the subscript that there are two moles of iron in every mole of Fe2O3, so just multiply your answer from part one by two. read more
You can find the moles of any mass of any compound. Write down the molecular formula of the compound for which you are calculating the number of moles. The molecular formula details the types of elemental atoms and the quantities of each type contained in a molecule of the compound. read more