W(Al)= 2Ar(Al)/Mr(Al2(SO4)3)=54/342=0,16=16%
W(S)=3Ar(S)/Mr(Al2(SO4)3)=96/342=0,28=28%
W(O)=12Ar(O)/Mr(Al2(SO4)3)=192/342=0,56=56%
W(Al)= 2Ar(Al)/Mr(Al2(SO4)3)=54/342=0,16=16%
W(S)=3Ar(S)/Mr(Al2(SO4)3)=96/342=0,28=28%
W(O)=12Ar(O)/Mr(Al2(SO4)3)=192/342=0,56=56%