n\(H2=\frac{4,48}{22,4}=0,2\left(mol\right)\)
\(CuO+H2-->H2O+Cu\)
0,2------0,2(mol)
\(Fe2O3+3H2--->2Fe+3H2O\)
1/15<----0,2(mol)
\(m_{CuO}=0,2.80=16\left(g\right)\)
\(m_{Fe2O3}=\frac{1}{15}.160=\frac{32}{3}\left(g\right)\)
b) \(n_{Cu}=n_{H2}=0,2\left(mol\right)\)
\(m_{Cu}=0,2.64=12,8\left(g\right)\)
\(n_{Fe}=\frac{2}{3}n_{H2}=\frac{2}{15}\left(mol\right)\)
\(m_{Fe}=\frac{2}{15}.56=\frac{112}{15}\left(g\right)\)