Molar Mass of Sodium oxide
Na2O — 61.979 g/mol, worked out element by element.
Molar mass of Sodium oxide, Na₂O
61.979 g/mol
Molecular weight 61.979 · 3 atoms per formula unit
Also known as: na2o.
A glass component; reacts with water to give sodium hydroxide.
How 61.979 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Sodium | 2 | 22.99 | 45.980 | 74.19% |
| Oxygen | 1 | 15.999 | 15.999 | 25.81% |
| Total | 3 | 61.979 | 100% |
M = 2 × 22.990 + 1 × 15.999 = 61.979 g/mol
Grams to moles for Sodium oxide
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0161 mol | 9.716 × 10^21 |
| 10 g | 0.1613 mol | 9.716 × 10^22 |
| 25 g | 0.4034 mol | 2.429 × 10^23 |
| 50 g | 0.8067 mol | 4.858 × 10^23 |
| 100 g | 1.6134 mol | 9.716 × 10^23 |
| 250 g | 4.0336 mol | 2.429 × 10^24 |
| 61.979 g | 1 mol | 6.022 × 10^23 |
For any other amount, use the molar mass calculator, or the molarity calculator to make up a solution of a given concentration.
Related compounds
Related Calculators
Frequently Asked Questions
What is the molar mass of Sodium oxide?
The molar mass of Sodium oxide (Na2O) is 61.979 g/mol. That is the sum of the standard atomic weights of all 3 atoms in one formula unit: 2 × 22.990 + 1 × 15.999 = 61.979.
What is the molecular weight of Sodium oxide?
61.979 — the same number as the molar mass, but as a dimensionless ratio rather than in g/mol. The two terms describe the same arithmetic, so a molecular weight of 61.98 and a molar mass of 61.98 g/mol are the same answer.
How many moles are in 100 g of Sodium oxide?
100 ÷ 61.979 = 1.6134 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Sodium oxide?
By mass, Sodium oxide is 74.19% sodium, 25.81% oxygen. Each element's share is its total mass in the formula divided by 61.979.
How many atoms are in one formula unit of Sodium oxide?
3: 2 sodium, 1 oxygen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Sodium oxide contains 3 × 6.022 × 10²³ atoms in total.