Рассчитать массовые доли элементов в H3PO4 Al2(SO4)3 NaOH

1. H3PO4 Wелемента =n×Ar/Mречовини

Mреч=1×3+31+16×4=98

W(H)= 3×1/98=0.03

W(O)=4×16/98=0.65

W(P)= 31×1/98=0.31

2.Al2(SO4)3

Mреч=27×2+32×3+16×12=342

W(Al)=27×2/323=0.16

W(O)=16×12/343=0.56

W(S)=32×3/342=0.28

3.NaOH

Mреч= 23+1+16=40

W(Na)=23×1/40=0.575

W(H)=1×1/40=0.025

W(O)=16×1/40=0.4