Molar Mass of CO (Carbon Monoxide)
Molar Mass Calculator
What is the molar mass of CO?
Answer
M(CO) =
28.010 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024).
Co (cobalt) is a different substance: M(Co) = 58.933 g/mol.
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Ccarbon | 1 | 12.011 | 12.011 w ≈ 42.88% | ≈ 42.88% |
| Ooxygen | 1 | 15.999 | 15.999 w ≈ 57.12% | ≈ 57.12% |
| Σ = 28.010 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
O 57.12%C 42.88%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| C₂H₂ (acetylene) | 26.038 |
| Al (aluminium) | 26.982 |
| CHN (hydrogen cyanide) | 27.026 |
| CO (carbon monoxide) | 28.010 |
| N₂ (nitrogen) | 28.014 |
| C₂H₄ (ethylene) | 28.054 |
| Si (silicon) | 28.085 |