Molar Mass of Mn2O7 (Manganese Heptoxide)
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What is the molar mass of Mn2O7?
Answer
M(Mn2O7) =
221.869 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024).
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Mnmanganese | 2 | 54.938 | 109.876 w ≈ 49.52% | ≈ 49.52% |
| Ooxygen | 7 | 15.999 | 111.993 w ≈ 50.48% | ≈ 50.48% |
| Σ = 221.869 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
O 50.48%Mn 49.52%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| Al(NO₃)₃ (aluminum nitrate) | 212.994 |
| KIO₃ (potassium iodate) | 214.00 |
| HgO (mercury(II) oxide) | 216.59 |
| Mn₂O₇ (manganese heptoxide) | 221.869 |
| C₃H₆N₆O₆ (cyclonite) | 222.117 |
| PbO (lead(II) oxide) | 223.2 |
| ZnBr₂ (zinc bromide) | 225.19 |