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thaodenxau
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
bai 3 hoa tan het 4,8 gam hon hop hai kim loai M ,N vao coc dung m gam dung dich chua HNO3 va H2SO4 vua du thu duoc dung dich chi chua 2 muoi cua 2 kim loai va 2,1504 lit (dktc) hon hop khi gom NO2 va X sau phan ung khoi luong dung dich trong coc tang them 0,096 gam so voi m khoi luong muoi khan thu duoc la
bai 4 cho mot luong dung dich chua 12,7(g) FeCl2 vao mot luong nuoc brom chua 4,8 gam Br2 nguyen chat sau khi phan ung ket thuc cho dd AgNO3 du vao dd tao thanh thu duoc a (g) ket tua
bai 4 cho mot luong dung dich chua 12,7(g) FeCl2 vao mot luong nuoc brom chua 4,8 gam Br2 nguyen chat sau khi phan ung ket thuc cho dd AgNO3 du vao dd tao thanh thu duoc a (g) ket tua