Bionumbers

Question 1

van der Waals radii (Å) for C

Answer 1

1.7

Question 2

van der Waals radii (Å) for N

Answer 2

1.55

Question 3

van der Waals radii (Å) for O

Answer 3

1.52

Question 4

van der Waals radii (Å) for F

Answer 4

1.47

Question 5

van der Waals radii (Å) for H

Answer 5

1.1

Question 6

Bond Dissociation Energy for C-C (kcal/mol)

Answer 6

83-85

Question 7

Bond Dissociation Energy for C-H (kcal/mol)

Answer 7

-100

Question 8

Bond Dissociation Energy for S-S (kcal/mol)

Answer 8

60

Question 9

Bond Dissociation Energy for hydrogen bond (kcal/mol)

Answer 9

3-5

Question 10

hydrogen bond length (Å)

Answer 10

2.7 - 3.2

Question 11

LOW-BARRIER hydrogen bond length (Å)

Answer 11

2.2 - 2.5

Question 12

kT (background thermal energy at room temperature in kcal/mol)

Answer 12

0.6

Question 13

energetic cost for a 90 degree deformation of amide linkage in kcal/mol

Answer 13

20

Question 14

energetic separation of trans and cis amide isomers of N-methylacetamide in kcal/mol

Answer 14

2.6

Question 15

energetic separation of trans and cis isomers of non-proline peptide in kcal/mol

Answer 15

5 kcal/mol

Question 16

energetic separation of trans and cis isomers of cis-X-Pro peptide in kcal/mol

Answer 16

0.5 kcal/mol

Question 17

delta (G) equals…

Answer 17

1.4pK at 300 K