From this equation:
N₂ (g) + 3H₂(g) → 2NH3 (g)
If H₂ is disappearing at the rate of 0.3 mol/L min,
what is the appearing rate of NH3 ?

…0.1 mol/L min
…0.3 mol/L min
…0.2 mol/L min
…0.15 mol/L min