Calculateur de Fraction Molaire — Formule

## How to Calculate Mole Fraction

### Formula

**X_A = n_A / (n_A + n_B)**

Mole fractions are dimensionless and always sum to 1.

Exemple Résolu

A mixture of 2 mol ethanol and 3 mol water.

  1. Total moles = 2 + 3 = 5
  2. X_A = 2 / 5 = 0.4
  3. X_B = 3 / 5 = 0.6