Распределите вещества по классам:
Mg(OH)2, CaCl2, BaO, H3PO4, Fe(OH)2, SiO2, HCl, Na2O, KOH, CO2, H2SO4, HgO,SO2,Na3PO4, HNO3

Оксиды,кислоты,основание и соли
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