33 Samsetning efna og lausna
Lykiljöfnur
| % X = massi X / massi efnasambands × 100 % |
| (sameindamassi eða mólmassi) / (massi reynsluformúlu) = n formúlueiningar/sameind |
| (AₓBᵧ)ₙ = AₙₓBₙᵧ |
| M = mól leysts efnis / L lausnar |
| C₁V₁ = C₂V₂ |
| massaprósenta = (massi leysts efnis / massi lausnar) × 100% |
| ppm = (massi leysts efnis / massi lausnar) × 10⁶ ppm |
| ppb = (massi leysts efnis / massi lausnar) × 10⁹ ppb |