cau hoi hay

Y

yuper

[TEX]CnH2n + O_2 ---> nCO_2 + nH_2O[/TEX]
...7.............28.................7n................7n

\Rightarrow [TEX]28 = 7n + (7/2)n [/TEX] \Leftrightarrow [TEX]n = 2,67[/TEX] ( gần bằng )

\Rightarrow A. C3H6, C4H8
 
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