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In my chemistry textbook, the following reaction was given:

enter image description here

I have two questions related to the marked in orange boxes/parts of the image:

  1. Why is the molecule symbolized by $\ce{(CH3)3Cl}$ instead of $\ce{(CH3)3CCl}$ or $\ce{C(CH3)3Cl}$? Why is the carbon atom omitted?
  2. Why is the "inversion" molecule with a $\ce{CH2}$ instead of a $\ce{CH3}$ attached to it?

I would greatly appreciate an answer. This is high-school chemistry that I have just learned and I am a bit confused.

Thanks :)

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    $\begingroup$ Typos! Just bad editing. You are correct in your thinking. You should point these out to your instructor $\endgroup$
    – Waylander
    Commented Jul 19, 2018 at 10:48
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    $\begingroup$ Often the publisher has a list of errata for a book. You might try and look that up. Kudos for you studying diligently enough to catch the mistakes. $\endgroup$
    – MaxW
    Commented Jul 19, 2018 at 12:13
  • $\begingroup$ Step 2 in your text should have water as the nucleophile, not hydroxide. Hydroxide would lead to elimination to isobutylene, not substitution. $\endgroup$
    – user55119
    Commented Jul 19, 2018 at 14:51

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