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2004 USNCO Problem 55: n-butane

Source:

July 22, 2013

Problem Statement

Which formula represents n-butane?
(A) \ce{CH3CH2CH2CH3} \qquad(B) \ce{CH2=CHCH2CH3} \qquad(C) \ce{(CH3)2CHCH3} \qquad(D) \ce{(CH3)3CH}\qquad
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