June 2023 NY Regents Chemistry Exam
21 Which statement describes the two isomers of butane?
1. They have the same molecular formula but different structural formulas. 2. They have the same molecular formula and the same structural formula. 3. They have different molecular formulas and different structural formulas. 4. They have different molecular formulas but the same structural formula.
Solution: Isomers are molecules with the same molecular formula but different structural formula.
Answer: 1
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