$*)\begin{cases}C_nH_{2n+2-2a}:x mol \\ C_mH_{2m+2}: y mol \end{cases}\Rightarrow \begin{cases}x=0,0125 mol \\ y=0,02 mol \end{cases}$$C_nH_{2n+2-2a}+aBr_2\rightarrow C_nH_{2n+2-2a}Br_{2a}$ $\begin{cases}x=0,0125 mol \\ ax=\frac{2}{160} \end{cases}\Rightarrow a=1$$\Rightarrow \begin{cases}C_nH_{2n}:0,0125 mol \\ C_mH_{2m+2}:0,02 mol \end{cases}$$\Rightarrow 0,0125n+0,02m=n_{CO_2}=\frac{3,75}{100}+2\times \frac{6}{100}=0,1575$$\Rightarrow n+1,6m=12,6\Rightarrow \begin{cases}n=3 \\ m=6 \end{cases}\Rightarrow \begin{cases}C_3H_6 \\ C_6H_{12} \end{cases}$
$*)\begin{cases}C_nH_{2n+2-2a}:x mol \\ C_mH_{2m+2}: y mol \end{cases}\Rightarrow \begin{cases}x=0,0125 mol \\ y=0,02 mol \end{cases}$$C_nH_{2n+2-2a}+aBr_2\rightarrow C_nH_{2n+2-2a}Br_{2a}$ $\begin{cases}x=0,0125 mol \\ ax=\frac{2}{160} \end{cases}\Rightarrow a=1$$\Rightarrow \begin{cases}C_nH_{2n}:0,0125 mol \\ C_mH_{2m+2}:0,02 mol \end{cases}$$\Rightarrow 0,0125n+0,02m=n_{CO_2}=\frac{3,75}{100}+2\times \frac{6}{100}=0,1575$$\Rightarrow n+1,6m=12,6\Rightarrow \begin{cases}n=3 \\ m=6 \end{cases}\Rightarrow \begin{cases}C_3H_6 \\ C_6H_{12} \end{cases}$
$*)\begin{cases}C_nH_{2n+2-2a}:x mol \\ C_mH_{2m+2}: y mol \end{cases}\Rightarrow \begin{cases}x=0,0125 mol \\ y=0,02 mol \end{cases}$$C_nH_{2n+2-2a}+aBr_2\rightarrow C_nH_{2n+2-2a}Br_{2a}$ $\begin{cases}x=0,0125 mol \\ ax=\frac{2}{160} \end{cases}\Rightarrow a=1$$\Rightarrow \begin{cases}C_nH_{2n}:0,0125 mol \\ C_mH_{2m+2}:0,02 mol \end{cases}$$\Rightarrow 0,0125n+0,02m=n_{CO_2}=\frac{3,75}{100}+2\times \frac{6}{100}=0,1575$$\Rightarrow n+1,6m=12,6\Rightarrow \begin{cases}n=3 \\ m=6 \end{cases}\Rightarrow \begin{cases}C_3H_6 \\ C_6H_{12} \end{cases}$