Molar Mass of FeS (Iron(II) Sulfide)
Molar Mass Calculator
What is the molar mass of FeS?
Answer
M(FeS) ≈
87.91 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 ≈ 63.53% | ≈ 63.53% |
| Ssulfur | 1 | 32.06 | 32.06 w ≈ 36.47% | ≈ 36.47% |
| Σ = 87.905 ≈ 87.91 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
Fe 63.53%S 36.47%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| LiBr (lithium bromide) | 86.84 |
| MnO₂ | 86.936 |
| Sr (strontium) | 87.62 |
| FeS (iron(II) sulfide) | 87.91 |
| C₃H₄O₃ (pyruvic acid) | 88.062 |
| CH₃COOC₂H₅ (ethyl acetate) | 88.106 |
| C₅H₁₂O (isoamyl alcohol) | 88.150 |