Stoichiometry
balanced
Try: · ·
Starting amounts
| Species | Coefficient | Mass | Moles | Moles / coeff | limiting |
|---|---|---|---|---|---|
| N₂ | 1 | g | 0.9995 | 0.9995 | |
| H₂ | 3 | g | 1.9841 | 0.6614 | ← limiting |
H₂ is limiting — it runs out first.
0.6614 is the smallest moles-per-coefficient. That ratio decides, not the mass.
Expected products
| Species | Coefficient | Moles | Theoretical mass |
|---|---|---|---|
| NH₃ | 2 | 1.3228 | 22.53 g |
Left over
| N₂ | 0.3381 mol | 9.47 g in excess |
|---|
g
Assumes one complete reaction. Parallel or equilibrium reactions need more than this.