nN2 = 112/28 = 4 moli
nO2 = 32/32 = 1mol
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n amestec = 5 moli %N2 = 400/5 = 80% %O2 = 100/5 = 20%
b) nH2 = 18,066·10²³ / (6,022ₓ10²³) = 3 moli
H2 + Cl2 ⇒ 2HCl
nHCl = 2nH2 = 6moli
solutia de HCl : md = 6·36,5 = 219g c = 18,25% ⇒ ms = 219·100/18,25
ms = 1200g