Octane at a glance
| Property | Value |
|---|
| Molar mass | 114.232 g/mol |
|---|
| Molecular weight | 114.232 u |
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| Chemical formula | C8H18 |
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| Monoisotopic mass | 114.140851 u |
|---|
| CAS number | 111-65-9 |
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| PubChem CID | 356 |
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How to calculate the molar mass of octane
8 × 12.011 + 18 × 1.008 = 114.232 g/mol
- Count the atoms in C8H18: C 8, H 18.
- Multiply each atom count by the atomic weight of the element.
- Add the results to get 114.232 g/mol.
Elemental composition of octane
| Element | Atoms | Atomic weight | Mass (g/mol) | Mass % |
|---|
| C Carbon | 8 | 12.011 | 96.088 | 84.117% |
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| H Hydrogen | 18 | 1.008 | 18.144 | 15.883% |
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Grams and moles of octane
| Amount | Equals |
|---|
| 1 g | 0.0087541 mol |
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| 10 g | 0.087541 mol |
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| 100 g | 0.87541 mol |
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| 0.1 mol | 11.423 g |
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| 1 mol | 114.23 g |
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| 1 g, in particles | 5.2719 × 10^21 |
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Calculate other compounds