Molar Mass of Nitrogen dioxide
NO2 — 46.005 g/mol, worked out element by element.
Molar mass of Nitrogen dioxide, NO₂
46.005 g/mol
Molecular weight 46.005 · 3 atoms per formula unit
Also known as: no2.
The brown gas in photochemical smog, and half of the NO₂/N₂O₄ equilibrium.
How 46.005 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 2 | 15.999 | 31.998 | 69.55% |
| Nitrogen | 1 | 14.007 | 14.007 | 30.45% |
| Total | 3 | 46.005 | 100% |
M = 2 × 15.999 + 1 × 14.007 = 46.005 g/mol
Grams to moles for Nitrogen dioxide
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0217 mol | 1.309 × 10^22 |
| 10 g | 0.2174 mol | 1.309 × 10^23 |
| 25 g | 0.5434 mol | 3.273 × 10^23 |
| 50 g | 1.0868 mol | 6.545 × 10^23 |
| 100 g | 2.1737 mol | 1.309 × 10^24 |
| 250 g | 5.4342 mol | 3.273 × 10^24 |
| 46.005 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.
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Frequently Asked Questions
What is the molar mass of Nitrogen dioxide?
The molar mass of Nitrogen dioxide (NO2) is 46.005 g/mol. That is the sum of the standard atomic weights of all 3 atoms in one formula unit: 2 × 15.999 + 1 × 14.007 = 46.005.
What is the molecular weight of Nitrogen dioxide?
46.005 — 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 46.01 and a molar mass of 46.01 g/mol are the same answer.
How many moles are in 100 g of Nitrogen dioxide?
100 ÷ 46.005 = 2.1737 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Nitrogen dioxide?
By mass, Nitrogen dioxide is 69.55% oxygen, 30.45% nitrogen. Each element's share is its total mass in the formula divided by 46.005.
How many atoms are in one formula unit of Nitrogen dioxide?
3: 2 oxygen, 1 nitrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Nitrogen dioxide contains 3 × 6.022 × 10²³ atoms in total.