Molar Mass of HNO2 (Nitrous Acid)
Molar Mass Calculator
What is the molar mass of HNO2?
Answer
M(HNO2) =
47.013 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024).
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Hhydrogen | 1 | 1.0080 | 1.0080 w ≈ 2.14% | ≈ 2.14% |
| Nnitrogen | 1 | 14.007 | 14.007 w ≈ 29.79% | ≈ 29.79% |
| Ooxygen | 2 | 15.999 | 31.998 w ≈ 68.06% | ≈ 68.06% |
| Σ = 47.013 g/mol w = 100% | 100% | |||
Each fraction is rounded on its own, so the printed ones add up to 99.99%; unrounded, they make exactly 100%.
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
O 68.06%
N 29.79%H 2.14%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| HCOOH (formic acid) | 46.025 |
| C₂H₅OH (ethanol) | 46.069 |
| CH₆N₂ (monomethylhydrazine) | 46.073 |
| HNO₂ (nitrous acid) | 47.013 |
| Ti (titanium) | 47.867 |
| O₃ (ozone) | 47.997 |
| SO (sulfur monoxide) | 48.06 |