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