Anh em giải dùm bài này với

M

mydream_1997

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A

alexandertuan


$n_{H_2}$=$\dfrac{V}{22,4}$=$\dfrac{1}{22,4}$
$M_{H_2}$=$\dfrac{m}{n}$=2,24
\Rightarrow $M_H$=1,12 g
đặt X=% proti
\Rightarrow %doteri=100-X
1,12=$\dfrac{X*1 + 2(100-X)}{100}$
\Rightarrow X= 88%
y=12 %
 
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