Multiple Choice
Given the conformations of ethane: staggered, eclipsed, and gauche, rank them in order of increasing energy.
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4. Alkanes and Cycloalkanes
Conformational Isomers
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Determine if the following pairof molecules is isomers or conformers?
A
Conformers
B
Isomers
C
None of them
Verified step by step guidance1
Identify the molecular formula of each compound. The first molecule is a linear chain with a double bond, and the second is a cyclic structure with a double bond.
For the first molecule, count the number of carbon and hydrogen atoms. It appears to be a linear alkene with the formula C5H10.
For the second molecule, count the number of carbon and hydrogen atoms. It appears to be a cycloalkene with the formula C5H8.
Compare the molecular formulas of the two compounds. If they have the same molecular formula but different structures, they are isomers. If they have different molecular formulas, they are not isomers.
Since the molecular formulas are different (C5H10 vs. C5H8), these compounds are not isomers. They are different compounds altogether.
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