What is the dissociation constant, K d , of a ligand with a percent occupancy, or fractional saturation, of 30 % when [ligand] = 10 − 7 M ?

Answer : The value of dissociation constant is,

Explanation :

Formula used :

where,

= percent occupancy = 30 % = 0.3

[A] = consecration of unbound ligands =

= dissociation constant = ?

Now put all the given values in the above formula, we get:

Thus, the value of dissociation constant is,

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b

0.88m hope i am correct : )