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phamnhienan1306
2 năm trước
: Đốt cháy hoàn toàn 3,0 gam một hiđrocacbon X thu được 4,48 lít CO2 (đktc) và 5,4 gam H2O. Tỉ khối hơi của hiđrocacbon X so với hiđro là 15. Công thức phân tử của X là
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