Question: Zingiberene, a fragrant compound isolated from ginger, has the molecular formula C15H24 and is known not to contain any triple bonds. (a) What is the

Zingiberene, a fragrant compound isolated from ginger, has the molecular formula C15H24 and is known not to contain any triple bonds.
(a) What is the index of hydrogen deficiency of zingiberene?
(b) When zingiberene is subjected to catalytic hydrogenation using an excess of hydrogen, 1 mol of zingiberene absorbs 3 mol of hydrogen and produces a compound with the formula C15H30. How many double bonds does a molecule of zingiberene have?
(c) How many rings?

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