Draw the structures and name the four constitutional isomers with molecular formula C₄H₉Br.

Draw the condensed and skeletal structures for each of the following:

c. isopropylacetylene

Draw the condensed and skeletal structures for each of the following:

a. 1-chloro-3-hexyne

Draw a condensed structure for each of the following:

a. 2-hexyne

b. 5-ethyl-3-octyne

Draw a condensed structure for each of the following:

e. methoxyethyne

f. sec-butyl-tert-butylacetylene

Draw the structures and give the common and systematic names for alkynes with molecular formula C₇H₁₂. Ignore stereosiomers. (Hint: There are 14.)

Draw all internal symmetrical alkynes with the molecular formula C₁₀H₁₈.

For each molecular formula, draw all the isomeric alkynes, and give their IUPAC names. Circle the acetylenic hydrogen of each terminal alkyne.

(a) C₅H₈ (three isomers)

Identify the following halogen-containing compounds as a haloalkane, haloalkene, or haloarene.

(b)