Объяснение:
1) 2H3PO4 + 3MgO → Mg3(PO4)2 + 3H2O
2) SO3 + 2NaOH → Na2SO4 + H2O
3) Cu(OH)2 + 2HCl → CuCl2 + 2H2O
4) СaCO3 → CaO + CO2↑
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Объяснение:
1) 2H3PO4 + 3MgO → Mg3(PO4)2 + 3H2O
2) SO3 + 2NaOH → Na2SO4 + H2O
3) Cu(OH)2 + 2HCl → CuCl2 + 2H2O
4) СaCO3 → CaO + CO2↑