`Zn+2HCl->ZnCl_2+H_2`
`ZnO+2HCl->ZnCl_2+H_2O`
`n_{Zn}=n_{H_2}=(0,448)/(22,4)=0,02mol`
`%m_{Zn}=(0,02.65)/(9,4%)=13,83%`
`%m_{ZnO}=100%-13,83%=86,17%`
`n_{ZnO}=(9,4-(0,02.65))/(65+16)=0,1mol`
`n_{HCl}=2.0,02+2.0,1=0,24mol`
`Vdd_{HCl}=0,24+0,02=0,26l=260ml`