Molar Mass of Fe2O3
How to work out the molar mass of Fe2O3
- Count the atoms of each element in Fe2O3: 2 Fe and 3 O.
- Multiply each count by the element's atomic weight: 2 × 55.845 = 111.690; 3 × 15.999 = 47.997.
- Add the results: 111.690 + 47.997 = 159.687 g/mol.
Frequently asked questions
What is the molar mass of Fe2O3?
The molar mass of iron(III) oxide (Fe2O3) is 159.687 g/mol, so one mole of it weighs 159.687 grams.
How many moles are in 100 grams of Fe2O3?
100 g ÷ 159.687 g/mol = 0.626 mol.
Which element makes up most of the mass of Fe2O3?
Fe, at 69.94% of the mass.
Common compounds
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