\(n_{Al}=\dfrac{13,5}{27}=0,5\left(mol\right)\\ V_{kk}=4^3=64\left(dm^3\right)=64\left(l\right)\\ n_{O_2}=\dfrac{64}{5.22,4}=\dfrac{4}{7}\left(mol\right)\)
PTHH: 4Al + 3O2 --to--> 2Al2O3
LTL: \(\dfrac{0,5}{4}< \dfrac{\dfrac{4}{7}}{3}\rightarrow\)O2 dư, lá nhôm cháy hết
\(n_{Al_2O_3}=\dfrac{1}{2}n_{Al}=\dfrac{1}{2}.0,5=0,25\left(mol\right)\\ m_{Al_2O_3}=0,25.102=25,5\left(g\right)\)