The mole fraction of A in a mixture is
- Acheck_circle
n_A / n_total
- B
Mass A / mass total
- C
Volume A / volume total
- D
n_A × n_total
Explanation
Mole fraction χ_A = n_A / Σn_i. Always between 0 and 1; sum of all mole fractions = 1. Partial pressure: P_A = χ_A · P_total.