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lequanghuy63d
2 năm trước
Hòa tan 17,6g hỗn hợp Fe, Cu vào dd H2SO4 đặc nóng dư sau phản ứng thu được 8,96 lít khí SO2 (đktc). a. Tính % khối lượng mỗi kim loại trong hỗn hợp. b. Cho cùng lượng hỗn hợp trên tác dụng với H2SO4 loãng dư thì thu được bao nhiêu lít khí ở đktc.
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