Răspuns:
n NH3 = V NH3 / Vm = 0.25 moli NH3
1 mol NH3 ............. 3 moli H
0.25 moli NH3 ................ x
Obtinem : x = 0.75 moli H
1 mol H .................. 6.022*10^23 atomi
0.75 moli H .................... y
Obtinem : y = 4.5165*10^23 atomi H
