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laithanhsangvlg2021
2 năm trước
Dẫn 4,4 gam hỗn hợp khí gồm metan và etlen vào dung dịch brom thấy làm mất màu vừa đủ dung dịch có 16 gam brom. Tính % theo thể tích và % theo khối lượng từng khí có trong hỗn hợp ban đầu.
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