Объяснение:
2NaO + H2SO4 = Na2SO4 + H2O
Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O
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Объяснение:
2NaO + H2SO4 = Na2SO4 + H2O
Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O