Molar Mass of MgO (Magnesium Oxide)
Molar Mass Calculator
What is the molar mass of MgO?
Answer
M(MgO) =
40.304 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024).
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Mgmagnesium | 1 | 24.305 | 24.305 w ≈ 60.30% | ≈ 60.30% |
| Ooxygen | 1 | 15.999 | 15.999 w ≈ 39.70% | ≈ 39.70% |
| Σ = 40.304 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
Mg 60.30%O 39.70%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| NaOH (sodium hydroxide) | 39.997 |
| Ca (calcium) | 40.078 |
| SiC (silicon carbide) | 40.096 |
| MgO (magnesium oxide) | 40.304 |
| C₂H₃N (acetonitrile) | 41.053 |
| NaF (sodium fluoride) | 41.988 |
| C₃H₆ (propylene) | 42.081 |