làm giúp mình với ạ cảm ơn

`a)`

Đạt `n_{Al}=x(mol);n_{Zn}=y(mol)`

`->27x+65y=9,41(1)`

Có \(\begin{cases} n_{NO}+n_{N_2O}=\dfrac{2,464}{22,4}=0,11\\ 30n_{NO}+44n_{N_2O}=4,28\end{cases}\to \begin{cases} n_{NO}=0,04\\ n_{N_2O}=0,07\end{cases}\)

`Al^0->Al^{+3}+3e`

`Zn^0->Zn^{+2}+2e`

`2N^{+5}+8e->N_2^{+1}`

`N^{+5}+3e->N^{+2}`

Bảo toàn e: `3x+2y=3n_{NO}+8n_{N_2O}=0,68(2)`

`(1)(2)->x=0,18;y=0,07`

`\%m_{Al}={0,18.27}/{9,41}.100\%\approx 51,65\%`

`\%m_{Zn}=100-51,65=48,35\%`

`b)`

`n_{HNO_3\ pu}=4n_{NO}+10n_{N_2O}=0,86(mol)`

`->V_{dd\ HNO_3\ pu}={0,86}/2=0,43(L)=430(mL)`