Molar Mass of FeS2 (Ferrous Disulfide)
Molar Mass Calculator
What is the molar mass of FeS2?
Answer
M(FeS2) ≈
119.97 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — S: 32.06.
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Feiron | 1 | 55.845 | 55.845 w ≈ 46.55% | ≈ 46.55% |
| Ssulfur | 2 | 32.06 | 64.12 w ≈ 53.45% | ≈ 53.45% |
| Σ = 119.965 ≈ 119.97 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
S 53.45%Fe 46.55%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| KBr (potassium bromide) | 119.002 |
| CHCl₃ (chloroform) | 119.37 |
| HMnO₄ (permanganic acid) | 119.942 |
| FeS₂ (ferrous disulfide) | 119.97 |
| NaH₂PO₄ (monosodium phosphate) | 119.976 |
| NaHSO₄ (sodium bisulfate) | 120.05 |
| C₄H₈O₄ | 120.104 |