Sec-butyl and tert-butyl and isobutyl..??? helpp

i just need to know the structure of each and how to identify and name them in any organic compund? ohh and whats the difference between carbohydrates and hydrocarbons??

thanks

sec butyl chloride CH3CH2CHCH3
|
Cl
isobutyl chloride CH3CHCH2Cl
|
CH3

t-butyl chloride (CH3)3CCl

Hydrocarbons contain only C & H, e.g., C6H12.
Carbohydrates have a general formula CH2O, e.g., glucose = C6H12O6.

about butyls you can see everything here

http://en.wikipedia.org/wiki/Butyl



hydrocarbons are compounds that consist entirely of Carbon and hydrogen ONLY !

carbohydrates are compounds that have the formula Cm(H2O)n

m, n = integar numbers

they have Carbon , Hydrogen and Oxygen