Đề có sai k bạn:
Zn và ZnO là dd à??
\(Zn+2HCl-->ZnCl2+H2\)(1)
\(ZnO+2HCl-->ZnCl2+H2O\)(2)
\(n_{H2}=\frac{8,96}{22,4}=0,4\left(mol\right)\)
\(n_{Zn}=n_{H2}=0,4\left(mol\right)\)
\(m_{Zn}=0,4.65=26\left(g\right)\)
\(n_{HCl\left(1\right)}=2n_{H2}=0,8\left(mol\right)\)
\(m_{HCl}=100,84.1,19=120\left(g\right)\)
\(m_{HCl}=\frac{120.36,5}{100}=43,8g\)
\(n_{HCl}=\frac{43,8}{36,5}=1,2\left(mol\right)\)
\(n_{HCl\left(2\right)}=1,2-0,8=0,4\left(mol\right)\)
\(n_{ZnO}=\frac{1}{2}n_{HCl}=0,2\left(mol\right)\)
\(m_{ZnO}=0,2.81=16,2\left(g\right)\)