Pentane at a glance
| Property | Value |
|---|
| Molar mass | 72.151 g/mol |
|---|
| Molecular weight | 72.151 u |
|---|
| Chemical formula | C5H12 |
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| Monoisotopic mass | 72.0939004 u |
|---|
| CAS number | 109-66-0 |
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| PubChem CID | 8003 |
|---|
How to calculate the molar mass of pentane
5 × 12.011 + 12 × 1.008 = 72.151 g/mol
- Count the atoms in C5H12: C 5, H 12.
- Multiply each atom count by the atomic weight of the element.
- Add the results to get 72.151 g/mol.
Elemental composition of pentane
| Element | Atoms | Atomic weight | Mass (g/mol) | Mass % |
|---|
| C Carbon | 5 | 12.011 | 60.055 | 83.235% |
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| H Hydrogen | 12 | 1.008 | 12.096 | 16.765% |
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Grams and moles of pentane
| Amount | Equals |
|---|
| 1 g | 0.01386 mol |
|---|
| 10 g | 0.1386 mol |
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| 100 g | 1.386 mol |
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| 0.1 mol | 7.2151 g |
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| 1 mol | 72.151 g |
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| 1 g, in particles | 8.3466 × 10^21 |
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Calculate other compounds