\(n_{Al}=\dfrac{9,45}{27}=0,35\left(mol\right)\\ a,PTHH:2Al+3Cl_2\rightarrow\left(t^o\right)2AlCl_3\\ b,n_{Cl_2}=\dfrac{3}{2}.0,35=0,525\left(mol\right)\\ V_{Cl_2\left(đkc\right)}=0,525.24,79=13,01475\left(l\right)\\ c,n_{AlCl_3}=n_{Al}=0,35\left(mol\right)\\ m_{AlCl_3}=0,35.133,5=46,725\left(g\right)\)