a,\(CuO+H_2\rightarrow Cu+H_2O\)
b,
\(n_{CuO}=\frac{12}{80}=0,15\left(mol\right)\)
\(\Rightarrow n_{Cu}=n_{CuO}=0,15\left(mol\right)\)
\(\Rightarrow m_{Cu}=0,15.64=9,6\left(g\right)\)
c, \(n_{H2}=n_{CuO}=0,15\left(mol\right)\)
\(PTHH:2Al+6HCl\rightarrow2AlCl_3+3H_2\)
________0,1 ___________________ 0,15__mol
\(\Rightarrow m_{Al}=0,1.27=2,7\left(g\right)\)