Equation 1)
| Reactants | Coefficient | Products | Coefficient |
| Zn | 1 | ZnCl2 | 1 |
| HCl | 2 | H2 | 1 |
Notice that a one is understood to be the coefficient of a formula with no number in front of it.
Equation 2)
| Reactants | Coefficient | Products | Coefficient |
| KClO3 | 2 | KCl | 2 |
| O2 | 3 |
Equation 3)
| Reactants | Coefficient | Products | Coefficient |
| S8 | 1 | SF6 | 8 |
| F2 | 24 |
Notice that a one is understood to be the coefficient of a formula with no number in front of it.
Equation 4)
| Reactants | Coefficient | Products | Coefficient |
| Fe | 4 | Fe2O3 | 2 |
| O2 | 3 |
Equation 5)
| Reactants | Coefficient | Products | Coefficient |
| C2H6 | 2 | CO2 | 4 |
| O2 | 7 | H2O | 6 |