[imath]M_Z=18[/imath]
[imath]n_Z=0,175[/imath]
Z có một khí hóa nâu=>NO=> còn lại là [imath]H_2[/imath]
[imath]n_{NO}+n_{H_2}=0,175[/imath]
[imath]30n_{NO}+2n_{H_2}=3,15[/imath]
=>[imath]n_{NO}=0,1[/imath],[imath]n_{H_2}=0,075[/imath]
BTKL=>[imath]n_{H_2O}=9,9[/imath]=>[imath]n_{H_2O}=0,55[/imath]
BT S=>[imath]n_{SO_4}(muối)=0,725[/imath]
BT H=>[imath]n_{NH_4^+}=0,05[/imath]
BT N=>[imath]n_{Fe(NO_3)_2}=0,075[/imath]
[imath]n_{H^+}=0,725.2=4.0,1+2.0,075+0,05.10+2n_{ZnO}=>n_{ZnO}=0,2[/imath]
BTKL: [imath]24n_{Mg}[/imath]+[imath]27n_{Al}[/imath]=38,55-0,2.81-0,075.180
BT e: [imath]2n_{Mg}[/imath]+[imath]3n_{Al}[/imath]=3.0,1+8.0,05+0,075.2
=>[imath]n_{Mg}=0,2[/imath], [imath]n_{Al}=0,15[/imath]
%[imath]n_{Al}=\frac{0,15}{0,2+0,15+0,075+0,2}.100=41,1%[/imath]%=>Câu C
Bạn tham khảo nhé