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Jamee C.
Waitress for 5 years, Pharmacy Tech for 1 and 1/2 years, and Chegg Tutor for 8 months.
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Organic Chemistry
TutorMe
Question:

Describe a SN1 reaction?

Jamee C.
Answer:

A SN1 reaction is a nucleophilic substitution reaction that occurs in two steps. The first step of this reaction involves loss of a leaving group, which forms a carbocation. The second step involves a nucleophile attacking the carbocation to form a product. When a SN1 reaction occurs, a mixture of products are formed with opposite stereochemistry. One product will have the same stereochemistry as reactant and this is called retention. When the product has opposite stereochemistry, it is called inversion.

Trigonometry
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Question:

A flagpole is 9 feet high. The flagpole casts a shadow of 12 feet along the ground. Calculate the distance between the end of the shadow and the top of the flag pole and calculate the angle between the shadow and the line representing the distance.

Jamee C.
Answer:

Important: when solving this kind of problem a drawing is essential. To determine the distance between the end of the shadow and the top of the flag pole, you use the Pythagorean theorem... a^2+b^2=c^2. "C" is always the hypotenuse of the triangle and so the distance is... 9^2+12^2=c^2 --> 81+144=c^2 --> c= 15ft To determine the angle, you can use sin (0) = opposite/hypotenuse. (opposite refers to the length of the line opposite the angle you are looking for.) You will need to use inverse sin to determine the angle, once you have divided the opposite by the hypotenuse. So.. sin(x)= 9/12 --> x=sin^1(0.75) --> x=48.59 degrees

Basic Chemistry
TutorMe
Question:

What is the periodic table and what information can it provide you about a specific element?

Jamee C.
Answer:

The periodic table is a table of elements that make up all matter arranged by mass of electrons. The periodic table can give you an idea of an element's properties like electronegativity, atomic radius, ionization energy, and electron affinity through trends.

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