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Determine whether the given molecule is a haloarene, a haloalkane, or a haloalkene.

How many of the following systematic names are correct? Correct those that are misnamed.
(i) 2-ethylhept-3-yne
(ii) 2-methylpent-3-yne
How many of the following systematic names are correct? Correct those that are misnamed.
(i) 4-propylpent-2-yne
(ii) 2-chlorohept-4-yne
What is the appropriate systematic name of each compound?

Write IUPAC names for the following alkenes.
a. (CH3CH2)2CH—CH2—CH=CH2
b. CH3—CH2—CH2—C(CH2)—CH2—CH2—CH3
Give structural formulas of two different alkyne molecules that correspond to each of the following molecular formulas. C4H6, C5H6 and C9H12.
The following name of an organic compound needs to be corrected. Draw the structure accurately representing the incorrect name and determine the correct IUPAC name.
cis-2,6-dichloro-3-ethylhex-2-ene