Molar Mass of As2O3 (Arsenic Trioxide)
Molar Mass Calculator
What is the molar mass of As2O3?
Answer
M(As2O3) =
197.841 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024).
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Asarsenic | 2 | 74.922 | 149.844 w ≈ 75.74% | ≈ 75.74% |
| Ooxygen | 3 | 15.999 | 47.997 w ≈ 24.26% | ≈ 24.26% |
| Σ = 197.841 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
As 75.74%
O 24.26%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| C₆H₁₂O₇ (D-gluconic acid) | 196.155 |
| Au (gold) | 196.97 |
| BaCO₃ (barium carbonate) | 197.34 |
| As₂O₃ (arsenic trioxide) | 197.841 |
| NaC₆H₇O₆ (sodium ascorbate) | 198.106 |
| CaBr₂ (calcium bromide) | 199.886 |
| Hg (mercury) | 200.59 |