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trieuthingoclan13
2 năm trước
Giúp mik nha mong mấy ah mấy chị chỉ đúng giùm em ^_^ Đề cho 2g NaOH và dung dịch H2SO4 sau phản ứng thu đc A và H2O Xác định mg A biết H=80%
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