Molar Mass of HI (Hydrogen Iodide)
Molar Mass Calculator
What is the molar mass of HI?
Answer
M(HI) ≈
127.91 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — I: 126.90.
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Hhydrogen | 1 | 1.0080 | 1.0080 w ≈ 0.79% | ≈ 0.79% |
| Iiodine | 1 | 126.90 | 126.90 w ≈ 99.21% | ≈ 99.21% |
| Σ = 127.908 ≈ 127.91 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
I 99.21%
H 0.79%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| AgF (silver fluoride) | 126.87 |
| I (iodine) | 126.90 |
| Te (tellurium) | 127.60 |
| HI (hydrogen iodide) | 127.91 |
| C₂CaO₄ (calcium oxalate) | 128.096 |
| C₁₀H₈ (naphthalene) | 128.174 |
| CdO (cadmium oxide) | 128.41 |