Some alkenes have cis-trans isomers because a. the carbon atoms in the double bond are free to rotate.     b. one of the carbon atoms in the double bond has two identical groups attached to it.     c. all of the carbon atoms in the compound are rigid and cannot rotate.     d. each of the carbon atoms in the double bond has four different groups attached to it.     e. the carbon atoms in the double bond cannot rotate.

Use four sentences to explain how a carbon atom in a girafee could eventually end up as a carbon atom in a tree

7. Compounds that generally have non-polar covalent bonds between atoms in the molecule would be classified as ________ compounds. a. organic b. inorganic c. both organic and inorganic d. neither organic nor inorganic

identify the alkane that contains six carbons A.hexane B.hexyne C.hexanone D. hexene

For each molecule, draw the structure and indicate whether cis/trans isomers are possible. If they do, draw them both and label them as cis and trans. a. 2-methyl-1-butene b.1,2-dimethylcyclohexane

3. Name each of these compounds (including isomer prefixes) and identify the functional groups present. a. H CH CH₂CH/ CH₂ Br b. H CH H El CHS

Which of the following can exist as cis-trans isomers?     a.  cyclohexane   b.  methylcyclohexane   c.  1,1-dimethylcyclohexane   d.  1,2-dimethylcyclohexane

Of the benzene molecule it is true that: a. c-c bonds have different bond lengths since they are single and double bonds. b.carries out aromatic electrophilic addition reactions c. the actual structure is a resonance hybrid d.it can be correctly represented with an equilibrium between two resonant structures.