Two lakes are connected to each other as shown in the figure below. Each lake has a volume of 106 m³ and an initial concentration of 10 g/m³. Lake 1 receives an inflow of 105 m³/day and a concentration of 100 g/m³. In addition to the Lake 1 outflow, Lake 2 receives an inflow of 1x105 m³/day with a concentration of 100 g/m³. The chemical undergoes first-order decay with a rate constant of 0.1 /day. (i) Calculate the steady-state concentrations (in g/m³) in the effluent from the lakes. (Include the mass balance equations in your solution.)

Two lakes are connected to each other as shown in the figure below. Each lake has a volume of 106 m³ and an initial concentration of 10 g/m³. Lake 1 receives an inflow of 105 m³/day and a concentration of 100 g/m³. In addition to the Lake 1 outflow, Lake 2 receives an inflow of 1x105 m³/day with a concentration of 100 g/m³. The chemical undergoes first-order decay with a rate constant of 0.1 /day. (i) Calculate the steady-state concentrations (in g/m³) in the effluent from the lakes. (Include the mass balance equations in your solution.)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Iodine-131 is a radioactive isotope that is used to diagnose and treat some forms of thyroid cancer. Iodine-131 decays to xenon-131, according to the equation below. iodine-131 → xenon-131 + electron The decay is first order with a rate constant of 0.138 d-¹. All radioactive decay is first order. How many days will it take for 18.0% of the iodine-131 in a 0.500 M solution of this substance to decay to xenon-131? Select the correct answer below: 0.0594 day 1.30 days O 1.44 days 12.4 days MOICH
5. A reaction has the expeimental rate law = rate = k[A]2[B]. If the concentraion of A is doubled and the concentration of B is halved, what happens to the reaction rate? 11. Studies of radioactive decay of nuclei show that the decay rate of the radioactive sample is proportional to the amount of the radioactive species present. Once half the radioactivity has disappeared, the radioactive decay rate is only half of its original value. Is radioactive decay a zeroth-order, first order, or second order process? 13. Which of these reactions are unimolecular and elementary, which are bimolecular and elementary, and which are not elementary? a. HCl(g) + H2O(g) -----> H3O+(g) + Cl-(g) b. I- (g) + CH3Cl(g) ----> ICH3(g) + Cl-(g) c. C2H6 (g) -----> C2H4(g) + H2(g) d. N2(g) = 3 H2(g) ---> 2 NH3 (g) e. O2(g) = O(g) ---> O3(g) 15. The activation energy Ea is 139.7 kJ mol-1 for the gas pahse reaction HI + CH3I ----> CH4 + I2 Calculate the fraction of the molecules whose…