Plural form of heptane; multiple molecules or samples of the seven-carbon hydrocarbon, including isomers with different structural arrangements.
From Greek 'hepta' (seven) + chemical suffix '-ane' + English plural '-s'. The plural encompasses different structural forms.
Heptane has nine different isomers—meaning nine different ways to arrange the same seven carbons—and these structural differences make them behave completely differently chemically, which is wild.
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