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kuuhaku1307
2 năm trước
Cho 12g hỗn hợp Fe và Cu tác dụng với 200ml dd H2SO4,x M thu được 2,24 lít khí H2, dd X và m(g) rắn không tan a) Viết PTHH b) Tính x, m = ? *Lưu ý: Cu không td với dd H2SO4
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