| Select | | View | Download | | 12.1 The mole and Avogadro constant | | |
| 12.2 The mole and molar mass | | |
| 12.3 Calculating percentage by mass of an element in a compound | | |
| 12.4 Calculating the mass of an element in a compound | | |
| 12.5 Calculating the relative atomic mass of an element | | |
| 12.6 Determining empirical formulae from experimental data | | |
| 12.7 Determining molecular formulae from experimental data | | |
| 12.8 Reacting masses from chemical equations | | |
| 12.1 The mole and Avogadro constant (bilingual version) | | |
| 12.2 The mole and molar mass (bilingual version) | | |
| 12.3 Calculating percentage by mass of an element in a compound (bilingual version) | | |
| 12.4 Calculating the mass of an element in a compound (bilingual version) | | |
| 12.5 Calculating the relative atomic mass of an element (bilingual version) | | |
| 12.6 Determining empirical formulae from experimental data (bilingual version) | | |
| 12.7 Determining molecular formulae from experimental data (bilingual version) | | |
| 12.8 Reacting masses from chemical equations (bilingual version) | | |
| Reacting masses (combined version) | | |
| Reacting masses (bilingual, combined version) | | |