Using Henry's Law: Mole fraction = KHP
N₂ mole percentage in air = 80%, total pressure = 10 atm
Partial pressure of N₂ = 0.80 × 10 = 8 atm = 8 × 760 = 6080 mmHg
KH for N₂ = 6.5 × 10⁷ mmHg
Mole fraction of N₂ = 6.5×1076080=6.5×1076.08×103=0.935×10−4=9.35×10−5