Ta có: \(n_{Br_2}=\dfrac{24}{160}=0,15\left(mol\right)\)
PT: \(C_2H_4+Br_2\rightarrow C_2H_4Br_2\)
Theo PT: \(n_{C_2H_4}=n_{Br_2}=0,15\left(mol\right)\)
\(\Rightarrow\left\{{}\begin{matrix}\%V_{C_2H_4}=\dfrac{0,15.22,4}{4,48}.100=75\%\\\%V_{CH_4}=25\%\end{matrix}\right.\)