Mr (C6H12O6)=6*Аr(С) + 12*Аr(Н) + 6*Аr(О) =6*12+12*1+6*16=72+12+96=180
W (С) =Аr(С) *6/Mr (C6H12O6)*100%=12*6/180*100%=0.4*100=40%
W (Н) =Аr(Н) *12/Mr (C6H12O6)*100%=1*12/180*100%= 0,066*100%=6.6%
W (О) =100%-(40+6,6)=53,4%
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