NY Chemistry Regents Exam Jan 2023
Which formula represents a hydrocarbon?
(1) C2H6 (2) C2H5OH
(3) C2H5Cl
(4) C2H6O
Solution: A hydrocarbon is a molecule that is composed of only hydrogens and carbons. Choice 1 is the correct answer. Other choices have other elements such as oxygen and chlorine.
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