Ответ: Mr(AlCl3)=27+3*35.5=133.5W(Al)=27/133.5=0.2=20%W(Cl3)=3*35.5/133.5=0.80=80%Mr(Fe(SO4)3)=56+3*32+12*16=344W(Fe)=56/344=0.16=16%W(S)=96/344=0.28=28%W(O)=192/344=0.56=56%Mr(CO2)=12+2*16=44W(C)=12/44=0.27=27%W(O2)=32/44=0.73=73%