Molar Mass of Sulfur dioxide
SO2 — 64.058 g/mol, worked out element by element.
Molar mass of Sulfur dioxide, SO₂
64.058 g/mol
Molecular weight 64.058 · 3 atoms per formula unit
Also known as: so2, sulphur dioxide.
Released when sulfur-bearing fuel burns; the first step towards acid rain.
How 64.058 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Sulfur | 1 | 32.06 | 32.060 | 50.05% |
| Oxygen | 2 | 15.999 | 31.998 | 49.95% |
| Total | 3 | 64.058 | 100% |
M = 1 × 32.060 + 2 × 15.999 = 64.058 g/mol
Grams to moles for Sulfur dioxide
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0156 mol | 9.401 × 10^21 |
| 10 g | 0.1561 mol | 9.401 × 10^22 |
| 25 g | 0.3903 mol | 2.350 × 10^23 |
| 50 g | 0.7805 mol | 4.701 × 10^23 |
| 100 g | 1.5611 mol | 9.401 × 10^23 |
| 250 g | 3.9027 mol | 2.350 × 10^24 |
| 64.058 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
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Frequently Asked Questions
What is the molar mass of Sulfur dioxide?
The molar mass of Sulfur dioxide (SO2) is 64.058 g/mol. That is the sum of the standard atomic weights of all 3 atoms in one formula unit: 1 × 32.060 + 2 × 15.999 = 64.058.
What is the molecular weight of Sulfur dioxide?
64.058 — 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 64.06 and a molar mass of 64.06 g/mol are the same answer.
How many moles are in 100 g of Sulfur dioxide?
100 ÷ 64.058 = 1.5611 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Sulfur dioxide?
By mass, Sulfur dioxide is 50.05% sulfur, 49.95% oxygen. Each element's share is its total mass in the formula divided by 64.058.
How many atoms are in one formula unit of Sulfur dioxide?
3: 1 sulfur, 2 oxygen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Sulfur dioxide contains 3 × 6.022 × 10²³ atoms in total.