Essay
The base peak of 2,2-dimethylpentane is at m/z 57, which corresponds to a composition of C4H9.
(a) Suggest a structure for the fragment that accounts for this peak.
(b) Offer a reason that this fragment is so abundant.
(c) Give a mechanism that shows the formation of this fragment.
Correct Answer:

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The structure of 2,2-dimethylpentane is ...View Answer
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