3a) Calculate the collision frequency, z, and the collision density, Z, in carbon monoxide, R = 180 pm at 25C and 100 kP

3b) .What is the percentage increase in the collision frequency of carbon monoxide (above) when the temperature is raised by 10 K at constant volume?

3c) Suppose that two molecules A and B in aqueous solution at 25 C have diffusion coefficients D_A=3.0 x 10^-9 m² s^-1 and D_B=2.2 x 10^-9 m² s^-1, respectively. If the critical reaction distance R* is 0.4 nm, what value is expected for the second-order rate constant for the diffusion controlled reaction?