The absorbance of a compound with a concentration 7.5 mM at 330 nm is 1.5. If the path length was 1 cm, what is the extinction coefficient of the compound at 330 nm?
200 M-1 cm-1
Why are the N‐C bonds in peptides so very robust?
a. carbon and nitrogen form very strong bonds
b. they evolved to be stronger
c. they have a resonance structure which shows the peptide bonds have partial double bond character
d. they are part of large structures
e. none of these
Answer: c. they have a resonance structure which shows the peptide bonds have partial double