Hydroiodic Acid at a glance
| Property | Value |
|---|
| Molar mass | 127.908 g/mol |
|---|
| Molecular weight | 127.908 u |
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| Chemical formula | HI |
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| Monoisotopic mass | 127.912297 u |
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| CAS number | 10034-85-2 |
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| PubChem CID | 24841 |
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How to calculate the molar mass of hydroiodic acid
1 × 1.008 + 1 × 126.9 = 127.908 g/mol
- Count the atoms in HI: H 1, I 1.
- Multiply each atom count by the atomic weight of the element.
- Add the results to get 127.908 g/mol.
Elemental composition of hydroiodic acid
| Element | Atoms | Atomic weight | Mass (g/mol) | Mass % |
|---|
| H Hydrogen | 1 | 1.008 | 1.008 | 0.78807% |
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| I Iodine | 1 | 126.9 | 126.9 | 99.212% |
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Grams and moles of hydroiodic acid
| Amount | Equals |
|---|
| 1 g | 0.0078181 mol |
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| 10 g | 0.078181 mol |
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| 100 g | 0.78181 mol |
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| 0.1 mol | 12.791 g |
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| 1 mol | 127.91 g |
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| 1 g, in particles | 4.7082 × 10^21 |
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Calculate other compounds