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Chemistry
A Level

What is chirality? Why is it seen in amino acids?

All amino acids except glycine are chiral molecules. This is also known as optical isomerism.

This means that they form isomers that are non-superimposable mirror images of each other. Wh...

Answered by Zoe C. Chemistry tutor
19151 Views

What are amino acids?

Amino acids are the monomers that form peptides and proteins. There are 20 different amino acids that contain an amino group (NH2), carboxyl group (COOH) and R-group. The general formula is:...

Answered by Zoe C. Chemistry tutor
2641 Views

How do I find the molecule from the 1H NMR spectrum?

(Note: proton and 1H+ are the same thing)

1. Draw a table with the following headings:

δ / ppm, integral, splitting, observations

2. Coun...

Answered by Daisy D. Chemistry tutor
3393 Views

How do buffers work?

What is a buffer?

A buffer is a solution that resists a change in pH when small amounts of acid or base are added. It is composed of either a weak acid or a weak base wit...

Answered by Daisy D. Chemistry tutor
3716 Views

Calculate the percentage, by mass, of carbon in cyclohexane. Give your answer to two significant figures.

formua of cyclohexane C6H12 

molar ratio is 1:2  (divide 6 and 12 by 6 )

to get mass ratio multiply by molar mass (1 x 12 and 2x1)

12:2

Answered by Tom F. Chemistry tutor
9337 Views

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