Ответ:
3NaO + H3PO4 = Na3PO4 + 3H2O
Fe2O3 + 3H2SO4 = Fe2(SO4)3 + 3H2O
K2O + 2HCl = 2KCl + H2O
BeO=Be(OH)2
ZnO=Zn(OH)2
Fe2O3=Fe(OH)3
Al2O3=Al(OH)3
Cr2O3=Cr(OH)3
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Ответ:
3NaO + H3PO4 = Na3PO4 + 3H2O
Fe2O3 + 3H2SO4 = Fe2(SO4)3 + 3H2O
K2O + 2HCl = 2KCl + H2O
BeO=Be(OH)2
ZnO=Zn(OH)2
Fe2O3=Fe(OH)3
Al2O3=Al(OH)3
Cr2O3=Cr(OH)3