Given the compounds 2,3-dimethylpentane and 2,4-dimethylpentane, which of the following is true?

A) Only 2,3-dimethylpentane is chiral.
B) Only 2,4-dimethylpentane is chiral.
C) Both are chiral.
D) Neither is chiral.


A

Environmental & Atmospheric Sciences

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Elements bond together to form molecules because they ____

A)are most stable when their outer electron shell is filled B)need to have a positive charge C)need to have a negative charge D)are glued together by protons E)are pulled by electromagnetic forces

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Using the analemma and the equation SA = 90° - AD calculate the solar altitude of the noon Sun at the following latitudes on the dates given:



Additional question:
1. In your own words, explain what you have calculated in problem 2c (explain what the answer means, not how it was calculated). Be as specific as possible.

Environmental & Atmospheric Sciences