Mr(HNO3)=Ar(H)+Ar(N)+Ar(O)*3=1+14+16*3=63
w%(H)=(Ar(H)/Mr(HNO3))*100%=(1/63)*100%=1,59%
w%(N)=(Ar(N)/Mr(HNO3))*100%=(14/63)*100%=22,22%
w%(O)=(Ar(O)*3/Mr(HNO3))*100%=(16*3/63)*100%=76,19%
w(H)=Mr(H)*индекс/Mr(HNO3)=1/63=1.59%
дальше аналогично.
w(N)=14/63=22.22%
w(O)=48/63=76.19%
