\(n_{H_2}=\dfrac{4,958}{24,79}=0,2\left(mol\right)\)
PTHH: 2Al + 3H2SO4 ---> Al2(SO4)3 + 3H2
2/15<-------------------1/15<----------0,2
2H2 + O2 --to--> 2H2O
0,2-->0,1
\(m_{Al}=\dfrac{2}{15}.27=3,6\left(g\right)\\ m_{Al_2\left(SO_4\right)_3}=\dfrac{1}{15}.342=22,8\left(g\right)\\ V_{kk}=5.0,1.24,79=12,395\left(mol\right)\)