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np207mion
2 năm trước
Dãy nào sau đây gồm tất cả các chất là axit? A: HCl, NaOH, H2 SO4 B: HCl, CH4 , H2 SO4 . C: HCl, Ca(OH)2 , H2 SO4 . D: HCl, HNO3 , H2 SO4 .
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