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wlaziow
2 năm trước
Cho 2,24 lít khí hiđro đi qua 12g bột đồng oxit nung nóng. Sau khi phản ứng hoàn toàn thì dừng lại. 1. Sau phản ứng chất nào còn dư, nếu là chất khí thì dư bao nhiêu lít, nếu là chất rắn thì dư bao nhiêu gam? 2. Xác định lượng kim loại Cu thu được.
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