α-Terpinene is a pleasant-smelling compound present in the essential oil of marjoram, a perennial herb. Upon hydrogenation with a metal catalyst, α-terpinene reacts with two equivalents of hydrogen gas to produce 1-isopropyl-4-methylcyclohexane. Ozonolysis of α terpinene yields the following two compounds:

(a) How many double bonds are present in α-terpinene?

(b) Identify the structure of α-terpinene.

(c) Predict the wavelength of maximum absorption (λ_max) in the absorption spectrum of α-terpinene.

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