Base your answers to questions 69 through 72 on the information below and on your knowledge of chemistry.
hydrazine, n2h4, is a compound that is very soluble in water and has a boiling point of
113°c at standard pressure. unlike water, hydrazine is very reactive and is sometimes used
as a fuel for small rockets. one hydrazine reaction producing gaseous products is
represented by the balanced equation below.
n2h4(ℓ) → n2(g) 2h2(g) heat
explain, in terms of intermolecular forces, why the boiling point of hydrazine at
standard pressure is higher than the boiling point of water at standard pressure

Achemist at a pharmaceutical company is measuring equilibrium constants for reactions in which drug candidate molecules bind to a protein involved in cancer. the drug molecules bind the protein in a 1: 1 ratio to form a drug-protein complex. the protein concentration in aqueous solution at 25 ˚c is 1.74 x10-6 m . drug a is introduced into the protein solution at an initial concentration of 2.00 x10-6m. drug b is introduced into a separate, identical protein solution at an initial concentration of 2.00 x10-6m. at equilibrium, the drug a-protein solution has an a-protein complex concentration of 1.00 x10-6m, and the drug b solution has a b-protein complex concentration of 1.40 x10-6m.a. calculate the kc value for the a-protein binding reaction.b. calculate the kc value for the b-protein binding reaction.c. assuming that the drug that binds more strongly will be more effective, which drug is the better choice for further research?