# How do you find the molar mass of hematite?

Jul 31, 2016

Molar mass of hematite$159.6922 g . m o {l}^{-} 1$

#### Explanation:

Molecular formula of hematite is iron(III) oxide, ${\text{Fe"_2"O}}_{3}$.
Average atomic mass of iron is $55.847$
Average atomic mass of oxygen is $15.9994$
Mass of one Molecule of hematite$= 2 \times 55.847 + 3 \times 15.9994$
$= 159.6922$
Molar mass of hematite$159.6922 g . m o {l}^{-} 1$