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Are these 2 organic groups the same?

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Attached is the image of the desired structure, my question is based on what is pictured as (CH3)2HC- I represented this group as C3H7 which does seem like the logical equivalent, but just being safe here. Am I right?

post-94139-0-05907200-1335640044.png

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Yes, those are the same "group"

Random note: they're enantiomers which, if you are HL, is all IB will care about :P

Thank you Drake, but 2 other questions on the same line please :)

post-94139-0-73040000-1335640855.jpg

Referring to the image above I'd like to ask whether the same thing inverted 90 degrees to the right is correct?

post-94139-0-58723400-1335640872.png

As for this one It really puzzles me how the IBO started drawing good old branched structures as these 3-D enantiomer like structures and note this image is from a diagram of SN1. Though I'm not denying that it could be chiral.. explanation?

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I don't get what you're asking for the first picture

It's not chiral. Easiest way to tell is that it has 2 H groups. As far as you're concerned, Sn1 does nothing to the stereochemistry of the molecule...until you take organic in college >.>

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