\(n_{CO_2}=\dfrac{0,448}{22,4}=0,02mol\)
\(CaCO_3+2HCl\rightarrow CaCl_2+CO_2\uparrow+H_2O\)
x...............................................x
\(BaCO_3+2HCl\rightarrow BaCl_2+CO_2\uparrow+H_2O\)
y................................................y
\(\left\{{}\begin{matrix}100x+197y=3,164\\x+y=0,02\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=0,008\\y=0,012\end{matrix}\right.\)
\(\Sigma_{hh}=0,008+0,012=0,02mol\\ \%n_{BaCO_3}=\dfrac{0.012\cdot100}{0,02}=60\%\)
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