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quangquang78
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
hoa tan 1.42g hh Al, Mg,Cu vao Hcl đủ thu dc ddA , chat ran B va khi C
cho dd A tac dung voi 90ml NAOH 1M.loc tac ket tủa nung toi khoi luong ko doi .thu dc 0,91chat ran.chat ran B phan ung voi HNO3 dac nong thu 0.448l khi [dktc]
tinh %m kim loai trong hh dau![Cool :cool: :cool:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
cho dd A tac dung voi 90ml NAOH 1M.loc tac ket tủa nung toi khoi luong ko doi .thu dc 0,91chat ran.chat ran B phan ung voi HNO3 dac nong thu 0.448l khi [dktc]
tinh %m kim loai trong hh dau