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MasteringChemistry: Weekly Self Test-3.0-Google Chrome Secure l https://session.masteringchemistry.com/myct/itemview.assig Weekly Self Test-3.0 Problem 3.71 ID= 94890380 8 of 10 Part C About which other carbon-carbon bonds may rotation occur? For rotation about the C-3-C-4 bond of 2-methylhexane consider the following A.CHCH2 CH(CH)25 H CH(CH3)2 CH2CH3 CH(CH2 CH(CH3)2 CH2CHg CH2CH3 Check all that apply. C-1-C-2 bond C-2-C-3 bond C-4-C-5 bond C-5-C-6 bond OC-2-C-7 bond CH(CH3)2 CH2CH3 CHj)2H CH2CH3 Submit X Incorrect; Try Again; 5 attempts remaining

Explanation / Answer

In the given compound roating can occur around all the listed C-C single bonds.

Staggard conformers will be all equally stable when all three substituents, around one of the C atom of the C-C bond, are same. This is the case of C1-C2, C2-C7 and C5-C6, as one of the C atom in each of these three bonds have same constituents that is H atom.So answer is 3.

Comment in case of any doubt.

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