giup em voi

L

luffy_95

giải

[TEX]ta goi CTDGN A= C_xH_yO_z[/TEX]
[TEX]pt:C_xH_yO_z+ (x+ \frac{y}{4}-\frac{z}{2})O_2 => x CO_2+\frac{y}{2} H_2O[/TEX]
[TEX]gia su co 1 mol A pu[/TEX]
[TEX]theo de ta co: 8.16z= 32.(x+ \frac{y}{4}-\frac{z}{2})[/TEX]
[TEX] 44.9=22y.9[/TEX]
[TEX]giai he tren ta co 144z=48x[/TEX]
[TEX] 2x=y[/TEX]
[TEX]\Rightarrow x:y:z[/TEX]
[TEX]ban giai tiep nhe![/TEX]
:khi (168)::khi (168)::khi (168):
 
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