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Biology 8 Online
OpenStudy (anonymous):

A molecule of alkene has the chemical formula C #H $. How many carbon-carbon double bonds are present in the molecule?

OpenStudy (anonymous):

Assuming you mean C3H4:

OpenStudy (anonymous):

Since C has covalence 4 (= able to make 4 bond) and H covalence one, only the above drawn molecule and a molecule with one triple and one single bond are possible. So the answer is either 0 or 2

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