Can you help me answer this problem, a container of Atrazine (500 g) is dumped into a river 2.3 km upstream of a municipal water intake pipe. Cross-sectional area of the river is 5.7 m2. Assume that the Atrazine is dumped as a point source. The river flow is 8.25m3/s and the longitudinal dispersion coefficient is 0.1 m2/s, what is the maximum concentration (in ppm) expected at the intake. How spread out (in the direction of flow) is the atrazine at the time the peak concentration occurs at the intake pipe? Assume 2 standard deviations on either side of the peak is a good estimate of spread. Thank you

Please show all steps to solution clearly. Thanks

Q 5 please

Two components, A and B, were mixed forming a non-ideal solution and their liquid and vapor phases were allowed to equilibrate at 298 K and a pressure of 1 atm. The mole fraction of A in the liquid phase was found to be 0.380. The mole fraction of A in the vapor phase was 0.490. Calculate the activities and activity coefficients of both A and B in the solution on the basis of Raoult’s law. The vapor pressures of the pure liquids were P*(A) = 790 Torr and P*(B) = 600 Torr. Do these represent positive, negative, or no deviations from Raoult’s Law? Describe the intermolecular interactions that take place between A and B.