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Tutor profile: Helen M.

Helen M.
Previous experience as a tutor

Questions

Subject: Organic Chemistry

TutorMe
Question:

How can you determine the chirality of a compound?

Helen M.
Answer:

Chirality is when a carbon is connected to 4 different groups. If there are 4 different compounds connected to the carbon, next we have to number the priority groups based on molecular weight. Next, see if sequence of the priority groups goes in a clockwise (R) or counterclockwise (S). Next find the hydrogen and see if it is out of the plane or in the plane. If it is in the plane, the R/S designation is swapped between the two. If the hydrogen is out of the plane, the configuration stays the same.

Subject: Chemistry

TutorMe
Question:

How are the elements on the periodic table listed?

Helen M.
Answer:

The elements on the periodic table are listed based on their proton number. This is what makes the element unique from elements that it may be next to.

Subject: Biology

TutorMe
Question:

Th heart is an organ with an important role in blood circulation. List in which direction blood travels through the heart.

Helen M.
Answer:

Blood enters through the vena cava, then into the left atrium, then the left ventricle and out through the pulmonary artery. Blood returns through the pulmonary vein, into the right atrium, then the right ventricle and then out through the aorta.

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