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Sajani N.
Senior Year Undergraduate at the University of California, Davis
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Organic Chemistry
TutorMe
Question:

what does splitting of a signal show? And does the 13C NMR spectra show carbon-carbon splitting?

Sajani N.
Answer:

Splitting of a signal shows the number of hydrogens attached to each carbon (N+1 Rule). 13C NMR does not usually show the carbon-carbon splitting due to the low abundance that is found.

Basic Chemistry
TutorMe
Question:

what is the difference between an acid and a base?

Sajani N.
Answer:

An acid is an ionic compound with a pH value ranging between 0-7. An acid donates a hydrogen ion, which helps dissolve in the water to form a hydrogen ion H+. The higher the concentration of H+, higher the acidity. A base is an ionic compound and has a pH value from 7-14 and accepts hydrogen atoms. basic compounds dissociate to form a negative OH-. Greater the concentration of the OH-, stronger the base.

Biology
TutorMe
Question:

what is the first step of cell division and its purpose?

Sajani N.
Answer:

prophase is the first stage of cell division. The nuclear envelope of the cell is broken down and the nucleolus of the cell disappears. The chromatin shortens by condensing to form more visible strands named chromosomes. Microtubules (spindle and spindle fibers) attach to the newly formed chromosomes' kinetochore to help the alignment.

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