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2 năm trước
Cho các CTHH sau: Na2O, P2O5, KOH, HCl, H2SO4, SO2, Fe3O4, Mg(OH)2, Ba(HCO3)2, HgO, H2S, Al2(SO4)3 - Hãy cho biết CTHH nào là oxit axit? Bazơ? Muối? - Gọi tên mỗi chất
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