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| 发帖时间 - 2005/11/5 13:16:05 | Number of isomers The compounds now assigned the generic name alkane are also referred to as saturated hydrocarbons and as paraffin hydrocarbons. The word paraffin,from the Lation parum affinis (slight affinity)refers to the inert chemical nature of the substances and is applied also to the wax obtanable from petroleum and consisting of a mixture of higher alkanes. Derivation of the formulas of the pentanes(3 isomers),hexanes(5),and heptanes(9) has already demonstrated the sharp rise in diversity with increasing carbon content. Normal Alkanes 帮我翻译一下吧!谢谢!
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