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Tutor profile: Joshua R.

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Joshua R.
Certified Secondary Science and Math Teacher
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Questions

Subject: Organic Chemistry

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Question:

Ten covalent bonds within the lewis structure of Propane account for how many valence electrons?

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Joshua R.
Answer:

These covalent bonds account for 20 valence electrons. To further understand this concept one must understand the molecular formula of propane which is C3H8. Carbon having 4 valence electrons equates to 12 valence electrons (4e * 3C= 12e). Eight hydrogens equate to 8 valence electrons therefore 8 hydrogen electrons plus 12 carbon valence electrons equal 20 valence electrons total.

Subject: Pre-Algebra

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Question:

9 + 6^2 − 2⋅8=

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Joshua R.
Answer:

29

Subject: Biology

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Question:

In which organelles are enzymes for intracellular digestion stored?

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Joshua R.
Answer:

The organelle is the lysosome it is used for waste disposal within the cell.

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