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Hỗn hợp gồm Fe,Fe2O3,Fe3O4,FeO (coi hỗn hợp gồm Fe và O )
nFe=0,01 mol
=>n H2S04 p/ư với Fe =0,01mol
=>n H2S04 p/ư với oxit=0,11mol
=>n[O]=0,11mol
=> mFe ban đầu =7,36-0,01x16=5,6 g

PTHH:

FexOy+H2 =>xFe +yH2O

nFe=1.12:56=0.02(mol)

Ta có mFexOy =0.02:x(mol)

=>1.6=0.02:x(56x+16y)

=>1.6x=1.12x +0.32y

=>0.48x=0.32y

=>x:y=0.32:0.48=2:3

Vậy x=2 ,y=3

CTHH của Oxit Sắt laFe2O3

CO +Co2 =>O2+C

pạn tự cân bằng nhé

cau rut gon

Trục căn thức ở mẫu 

for

countable;orange,apple,vegetable,rice,meat,banana,chicken,fish,carrot

potato

uncountable;milk,watter,bread,noodle,orange juice

chong benh uon van