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rinhoshi2003
2 năm trước
Câu 3: Khử hoàn toàn 24g Đồng(II)oxit bằng khí hiđrô. a, hãy tính khối lượng kim loại sinh ra. b, để có được lượng khí hiđrô cần dùng cho phản ứng trên phải dùng bao nhiêu gam kém tác dụng với dung dịch axit clohiđric CẦN GẤP!!! ai lm nhanh cho hay nhất lun
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