`2Zn+O_2` $\xrightarrow{t^o}$ `2ZnO`

`4Al+3O_2` $\xrightarrow{t^o}$ `2Al_2O_3`

`2Mg+O_2` $\xrightarrow{t^o}$ `2MgO`

`ZnO+2HCl->ZnCl_2+H_2O`

`Al_2O_3+6HCl->2AlCl_3+3H_2O`

`MgO+2HCl->MgCl_2+H_2O`

BTKL: `n_{O_2}={3,04-2,08}/{32}=0,03(mol)`

Theo pt:

`n_{HCl}=4n_{O_2}=0,12(mol)`

`->V={0,12}/{0,1}=1,2(L)`

Theo pt:

`n_{H_2O}=1/2n_{HCl}=0,06(mol)`

BTKL: `m_{ m u o i}=3,04+0,12.36,5-0,06.18=6,34(g)`