MAl(OH)3=27+3(16+1)=78g/mol
MMgO=24+16=40g/mol
MMgSO4=24+32+16*4=120g/mol
MH2SO4=2*1+32+16*4=98g/mol
MFe(NO3)2=56+2(14+16*3)=180g/mol
MCaCO3=40+12+16*3=100g/mol
MCu(OH)2=64+2(16+1)=98g/mol
MCaSO3=40+32+48=120g/mol
MMgSiO3=24+28+48=100g/mol
MNa2S=23*2+32=78g/mol
MAgNO3=108+14+48=170g/mol
MNaOH=23+16+1=40g/mol