Isomers Definition and 57 Threads

The book says 4, but isn't there 5? 1) CH3-CH2-CH2-CH2-BR 2) CH3-CH2-CH-CH3 BR 3) CH3-CH-CH2-BR CH3 4) CH3-CH2-CH-BR CH3 CH3 5) CH3-C-CH3 BR ugh..sorry i can't get the computer...

When (R)-2-chlorobutane is chlorinated, we obtain some 2,3-dichlorobutane. It consists of 71% meso isomer and 29% racemic isomers. Explain why the mixture need not be 50:50 meso and (2R,3R)-2,3-dichlorobutane

I am doing my Organic Chem homework and need help. It asks: Draw and name all constitutional isomers with formula C9H20 which have one quaternary carbon and one or more ethyl groups (there are three). What are they and how do I find them?

-c-c-c-c-c-c-c-c-c nonane c | -c-c-c-c-c-c-c-c- 2-methyloctane c | -c-c-c-c-c-c-c-c- 3-methyloctane c | -c-c-c-c-c-c-c-c- 4-methyloctane c | -c-c-c-c-c-c-c- 2,2 dimethylheptane | c does anyone...

hey I am trying to figure out all the isomers for C9H20...im getting kind of frusterated so if anyone can help me find them or just tell me how thatd be awesome! thanx! :smile:

I was given a molecular formula C7H16 and asked to find all possible isomers. I know there are nine because the question said it. But I am just wondering how to find all isomers correctly without repeating myself. Is there a way to do this mathematically or a general rule that makes it easier?

Today in my chemistry glass, my teacher was talking about isomers in organic chemistry. I was wondering if there is a formula or a way to predict the number of isomers each alkanes compound has.