NH3 - аммиак
W (X) = Ar (X) * a * 100 %
Mr вещ ва
Mr (NH3) = 17
w (N) = 14 * 1 / 17 = 82%
w (H) = 1 * 3 / 17 = 18%
ответ: w (N) = 82%, w (H) = 18%
w=Ar/Mr*100%
w(N)=14/17*100%=82,35%
W(H)=3/17*100%=17,65% или же можно 100%-82,35%=17,65%
