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k+____=KOH+___
Cu So4+____=Cu (OH)2+____
Mg(OH)2+___Mg CL2+H2O
H3 PO4+____Ca3 (Po4)2+H2O​


KKOHCu So4Cu OH2MgOH2Mg CL2H2OH3 PO4Ca3 Po42H2O class=