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panda_motsach
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
a) [TEX]CO[/TEX], [TEX]CO_2[/TEX], [TEX]SO_2[/TEX], [TEX]H_2[/TEX], [TEX]O_2[/TEX]
b) [TEX]CO_2[/TEX], [TEX]SO_2[/TEX]
c) [TEX]O_2[/TEX], [TEX]O_3[/TEX]
b) [TEX]CO_2[/TEX], [TEX]SO_2[/TEX]
c) [TEX]O_2[/TEX], [TEX]O_3[/TEX]
chú ý: [hoá 10] + tiêu đề
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