\(n_{Fe_2O_3}:a,n_{CuO}:b\)
=> 160a + 80b = 32
\(n_{H_2}=\dfrac{11,2}{22,4}=0,5\left(mol\right)\\
pthh:Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
a 3a
\(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)
b b
\(\left\{{}\begin{matrix}160a+80b=32\\3a+b=0,5\end{matrix}\right.\)
=> a = 0,1 , b =0,2
\(m_{Fe_2O_3}=0,1.160=16\left(g\right)\\
m_{CuO}=32-16=16\left(g\right)\)
\(m_{H_2}=0,5.2=1\left(g\right)\)