Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O
Al2O3 + 2NaOH +3 H2O = 2Na[Al(OH)4]
Ответ: 2
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Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O
Al2O3 + 2NaOH +3 H2O = 2Na[Al(OH)4]
Ответ: 2