Imagine flipping one of the magnets above so they are attracted to each other. As these magnets are separated, the attractive force decreases, but the potential energy of the
system increases. Discuss with a partner how this is possible.

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5 structural isomers

the isomers are:

n-exane :   ch3ch2ch2ch2ch2ch3

2-methylpentane :   ch3ch(ch3)ch2ch2ch3

3-methylpentane :   ch3ch2ch(ch3)ch2ch3

2,3-dimethylbutane :   (ch3)2chch(ch3)2

2,2-dimethylbutane :   (ch3)3cch2ch3