Molar Mass of Al2O3
How to work out the molar mass of Al2O3
- Count the atoms of each element in Al2O3: 2 Al and 3 O.
- Multiply each count by the element's atomic weight: 2 × 26.982 = 53.964; 3 × 15.999 = 47.997.
- Add the results: 53.964 + 47.997 = 101.961 g/mol.
Frequently asked questions
What is the molar mass of Al2O3?
The molar mass of aluminum oxide (Al2O3) is 101.961 g/mol, so one mole of it weighs 101.961 grams.
How many moles are in 100 grams of Al2O3?
100 g ÷ 101.961 g/mol = 0.981 mol.
Which element makes up most of the mass of Al2O3?
Al, at 52.93% of the mass.
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