Ethanol at a glance
| Property | Value |
|---|
| Molar mass | 46.069 g/mol |
|---|
| Molecular weight | 46.069 u |
|---|
| Chemical formula | C2H5OH |
|---|
| Monoisotopic mass | 46.0418648 u |
|---|
| CAS number | 64-17-5 |
|---|
| PubChem CID | 702 |
|---|
How to calculate the molar mass of ethanol
2 × 12.011 + 6 × 1.008 + 1 × 15.999 = 46.069 g/mol
- Count the atoms in C2H5OH: C 2, H 6, O 1.
- Multiply each atom count by the atomic weight of the element.
- Add the results to get 46.069 g/mol.
Elemental composition of ethanol
| Element | Atoms | Atomic weight | Mass (g/mol) | Mass % |
|---|
| C Carbon | 2 | 12.011 | 24.022 | 52.144% |
|---|
| H Hydrogen | 6 | 1.008 | 6.048 | 13.128% |
|---|
| O Oxygen | 1 | 15.999 | 15.999 | 34.728% |
|---|
Grams and moles of ethanol
| Amount | Equals |
|---|
| 1 g | 0.021707 mol |
|---|
| 10 g | 0.21707 mol |
|---|
| 100 g | 2.1707 mol |
|---|
| 0.1 mol | 4.6069 g |
|---|
| 1 mol | 46.069 g |
|---|
| 1 g, in particles | 1.3072 × 10^22 |
|---|
Calculate other compounds