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# Tutor profile: Katherine S.

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Katherine S.
Senior at Texas A&M University
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## Questions

### Subject:Environmental Science

TutorMe
Question:

Describe the depletion of the ozone layer.

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Katherine S.

The depletion of the ozone layer is occurring because of chloroflurocarbons and other halogenated substances released by industries around the world. The substances chemically react with atmospheric ozone causing the ozone layer to deplete.

### Subject:Chemistry

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Question:

What is the electron geometry and molecular shape of NF3?

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Katherine S.

The electron geometry of NF3 is tetrahedral because it has four electron groups (including lone pairs). The molecular shape of NF3 however is trigonal planar because it has three bonds and one lone pair.

### Subject:Calculus

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Question:

Compute the limit as x approaches 3 of (5x^3-8x-13)/(x^2-5)

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Katherine S.

The limit as x approaches 3 of (5x^3-8x-13)/(x^2-5)= limit as x approaches 3 of (5(3)^3-8(3)-13)/((3)^2-5)= limit as x approaches 3 = 8/4

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