How does a straight-chain alkane that has five carbon atoms differ from a cycloalkane that has five carbon atoms?

A straight-chain alkane with five carbon atoms has the formula C₅H₁₂, while a cycloalkane with five carbon atoms has the formula C₅H₁₀. Closing the chain into a ring removes two hydrogen atoms, so the straight-chain alkane has two more hydrogen atoms. The correct choice is C.

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