D
dongminh_96
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
B1: cho 34.8 gam hon hop gom FeCO3 va Fe3O4 tac dung voi 73.5 gam dung dich H2SO4 dac nong duthu duoc 4.48 lit hon hop khi o dktc va dung dich B .Cho B tac dung vua du voi 310 ml dung dich NaOH 4M
1.tinh khoi luong moi chat trong A
2. tinh nong do phan tram H2SO4 da dung
b2:de m gam bot sat ngoai khong khi sau 1 thoi gian thu duoc 12 gam chat ran gom{Fe;FeO;Fe3O4;Fe2O3}.Hoa tan hoan toan A trong H2SO4 dac nong du thoat ra 3.36 lit SO2 (san pham khu duy nhat o dktc ).tinh m????
nho cac ban nhe !!! cam onnhieu![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
1.tinh khoi luong moi chat trong A
2. tinh nong do phan tram H2SO4 da dung
b2:de m gam bot sat ngoai khong khi sau 1 thoi gian thu duoc 12 gam chat ran gom{Fe;FeO;Fe3O4;Fe2O3}.Hoa tan hoan toan A trong H2SO4 dac nong du thoat ra 3.36 lit SO2 (san pham khu duy nhat o dktc ).tinh m????
nho cac ban nhe !!! cam onnhieu