Помогите пж!! Дам 30 баллов
6. M(h3po3) = 82, M(naoh) = 40, M(na2co3) =106, M(al(hso4)3) =318,
M(znso4) =161
7. +7,-2; +4,-2; +4,-2; +2,-1; +1,-3; +7,-2; +1,-2; +2,-1; +4,-2; +3,-2;