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hoangminh164hv
2 năm trước
1) viết pthh khi cho Fe tác dụng O2, Cl2, S, HCl, H2SO4, AlCl3, CuSO4, AgNO3. 2) tìm thể tích dd HCl 2M cần hoà tan hỗn X gồm 7,2 gam FeO và 11,2 gam Fe?
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