dan luong khi CO di qua ong su chua 0,3mol hon hop A(FeOva Fe2O3)nung nong.sau 1 thoi gian phan ung thu duoc 24gam chat ran B gom FeO,Fe3O4,Fe2O3,Fe va 11,2lit hon hop khi X(dktc).thi khoi hoi cua X so voi H2la 20,4.Tinh phan tram khoi luong cac chat trong A