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trnk74
2 năm trước
Sắt tác dụng với axit clohiđric : Fe + 2HCl → ZnCl2 + H2 Nếu có 2,8 gam sắt tham gia phản ứng, em hãy tìm : a) Thể tích khí hiđrô thu được ở đktc. b) Khối lượng axit clohiđric cần dùng.
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