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nucuoitoanang0103
2 năm trước
Hoàn thành các phương trình hóa học của các phản ứng sau a) NaOH + Fecl2 –––> Fe ( CH2)+Nacl b) Fe + cl2 –––> Fecl3 c) Ca + H2O ––– Ca (OH) +H2 d) FeO3+Co –––>Fe+Co2
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