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Tutor profile: Julian S.

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Julian S.
Tutor, BS in Chemistry
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Questions

Subject: Organic Chemistry

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Question:

Would you expect He2⊕ to be more stable than He2? Than He?

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Julian S.
Answer:

The only difference between He2 and He2⊕ is that the latter has only 1 electron (not 2) in the antibonding orbital. It possesses two electrons in the bonding orbital as does He2, but because of the one leas electron in de­stabilizing antibonding orbital in He2⊕ , it should be more stable than He2. (It is, of course, less stable than He which has no electrons in the antibonding orbital.)

Subject: Basic Math

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Question:

Let f(x)=6x^2+x−5. Where does this function intersect the x-axis (i.e. what are the roots or zeroes of f(x))?

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Julian S.
Answer:

x=5/6, −1

Subject: Chemistry

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Question:

Place the following in order of decreasing solubility in ammonia: CH2Cl2, CH4, H2O

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Julian S.
Answer:

H2O, CH2Cl2, CH4

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