Molar Mass of Nitric acid
HNO3 — 63.012 g/mol, worked out element by element.
Molar mass of Nitric acid, HNO₃
63.012 g/mol
Molecular weight 63.012 · 5 atoms per formula unit
Also known as: hno3, aqua fortis.
Strong acid and strong oxidiser at once, which is why it dissolves metals hydrochloric acid will not.
How 63.012 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 3 | 15.999 | 47.997 | 76.17% |
| Nitrogen | 1 | 14.007 | 14.007 | 22.23% |
| Hydrogen | 1 | 1.008 | 1.008 | 1.60% |
| Total | 5 | 63.012 | 100% |
M = 3 × 15.999 + 1 × 14.007 + 1 × 1.008 = 63.012 g/mol
Grams to moles for Nitric acid
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0159 mol | 9.557 × 10^21 |
| 10 g | 0.1587 mol | 9.557 × 10^22 |
| 25 g | 0.3967 mol | 2.389 × 10^23 |
| 50 g | 0.7935 mol | 4.779 × 10^23 |
| 100 g | 1.5870 mol | 9.557 × 10^23 |
| 250 g | 3.9675 mol | 2.389 × 10^24 |
| 63.012 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 Nitric acid?
The molar mass of Nitric acid (HNO3) is 63.012 g/mol. That is the sum of the standard atomic weights of all 5 atoms in one formula unit: 3 × 15.999 + 1 × 14.007 + 1 × 1.008 = 63.012.
What is the molecular weight of Nitric acid?
63.012 — 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 63.01 and a molar mass of 63.01 g/mol are the same answer.
How many moles are in 100 g of Nitric acid?
100 ÷ 63.012 = 1.5870 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Nitric acid?
By mass, Nitric acid is 76.17% oxygen, 22.23% nitrogen, 1.60% hydrogen. Each element's share is its total mass in the formula divided by 63.012.
How many atoms are in one formula unit of Nitric acid?
5: 3 oxygen, 1 nitrogen, 1 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Nitric acid contains 5 × 6.022 × 10²³ atoms in total.