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hangarmy
2 năm trước
A là hiđrocacbon mạch hở, ở thể khí (đkt), biết 1 mol A tác dụng được tối đa 2 mol Br2 trong dung dịch tạo ra hợp chất B (trong B brom chiếm 88,88% về khối lượng. Vậy A có công thức phân tử là
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