\(a,PTHH:Zn+Cl_2\rightarrow ZnCl_2\)
\(b,n_{Zn}=\dfrac{m}{M}=\dfrac{13}{65}=0,2\left(mol\right)\\ Theo.PTHH:n_{Cl_2}=n_{ZnCl_2}=n_{Zn}=0,2\left(mol\right)\\ a=m_{Cl_2}=n.M=0,4.35,5=14,2\left(g\right)\)
\(b=m_{ZnCl_2}=n.M=0,2.136=27,2\left(g\right)\)
\(c,PTHH:2Al+3Cl_2\rightarrow2AlCl_3\\ Theo.PTHH:n_{Al}=\dfrac{2}{3}.n_{Cl_2}=\dfrac{2}{3}.0,2=\dfrac{2}{15}\left(mol\right)\\ m_{Al}=n.M=\dfrac{2}{15}.27=3,6\left(g\right)\)