Acetylene at a glance
| Property | Value |
|---|
| Molar mass | 26.038 g/mol |
|---|
| Molecular weight | 26.038 u |
|---|
| Chemical formula | C2H2 |
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| Monoisotopic mass | 26.0156501 u |
|---|
| CAS number | 74-86-2 |
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| PubChem CID | 6326 |
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How to calculate the molar mass of acetylene
2 × 12.011 + 2 × 1.008 = 26.038 g/mol
- Count the atoms in C2H2: C 2, H 2.
- Multiply each atom count by the atomic weight of the element.
- Add the results to get 26.038 g/mol.
Elemental composition of acetylene
| Element | Atoms | Atomic weight | Mass (g/mol) | Mass % |
|---|
| C Carbon | 2 | 12.011 | 24.022 | 92.257% |
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| H Hydrogen | 2 | 1.008 | 2.016 | 7.7425% |
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Grams and moles of acetylene
| Amount | Equals |
|---|
| 1 g | 0.038405 mol |
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| 10 g | 0.38405 mol |
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| 100 g | 3.8405 mol |
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| 0.1 mol | 2.6038 g |
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| 1 mol | 26.038 g |
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| 1 g, in particles | 2.3128 × 10^22 |
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Calculate other compounds