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maihaianh2610
2 năm trước
Cho kim loại kẽm tác dụng với 200ml đ H2SO4, 10m a) Viết pthh b) Tính kl kẽm c) Tính thể tích khí H2 d) Dẫn luồng khí H2 sinh ra ở trên đi qua PbO. Tính kl Pb
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