Pecticide DOT was used in the past to kill off insects but has been discontinued due to its persistence in the environment. It disintegrates with a halle (irst order) of 1.00 year. Suppose that 205 kg of DDT is applied in the fields sumounding a 7.50-acre pond having verage depth of 3.00 ft Suppose further that half of the DOT permeates into the pond and that this happens within a few days Assume that the density of the pond water is 1.00 g/ml. The following conversion factors will be helpfu -43.560 ² 1 acre 16 1 cm² -12 in -2.54 cm - 1 ml. 28,317cm Part B How long would it take for the DOT concentration in the pond to drop 1.00 ppm following this single application Assume that the pesticide does not leave the pond and the volume of water in the pone Express your answer numerically in years. View Available Hints) VAZ 2.3 Submit 4 2 years Incorrect; Try Again; One attempt remaining Review your calculations and make sure you round to 3 uunificant faunes in the last step

Pecticide DOT was used in the past to kill off insects but has been discontinued due to its persistence in the environment. It disintegrates with a halle (irst order) of 1.00 year. Suppose that 205 kg of DDT is applied in the fields sumounding a 7.50-acre pond having verage depth of 3.00 ft Suppose further that half of the DOT permeates into the pond and that this happens within a few days Assume that the density of the pond water is 1.00 g/ml. The following conversion factors will be helpfu -43.560 ² 1 acre 16 1 cm² -12 in -2.54 cm - 1 ml. 28,317cm Part B How long would it take for the DOT concentration in the pond to drop 1.00 ppm following this single application Assume that the pesticide does not leave the pond and the volume of water in the pone Express your answer numerically in years. View Available Hints) VAZ 2.3 Submit 4 2 years Incorrect; Try Again; One attempt remaining Review your calculations and make sure you round to 3 uunificant faunes in the last step

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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The enthalpy of adsorption of NH3 on Cu metal is found to be -200kJ/mole. The lifetime of NH3 molecule on Cu metal surface at 600K is? 200 s 2583 s 3.87x10^-32 s 40x10^-14 s
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please help me answer my assignment. thanks the rate constants (k) for the leaching of galena in an aqeous medium containing ammonium acetate under oxygen pressure at the different temperature are listed below: log K -10.9 -11.1 -11.2 -11.5 -12.1 -12.6 1/t x10^3 2.30 2.35 2.38 2.45 2.61 2.76 where k and T are expressed in mole^2/cm/min and K respectively. Calculate the activation energy of the leaching process
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The following data are for the chemisorption of hydrogen on copper powder at 25°C. Confirm that they fit the Langmuir isotherm at low coverages. Then find the value of K for the adsorption equilibrium and the adsorption volume corresponding to complete coverage. \ table V 3 [la, 25, 129,253, 540],[m², 0.042, 0.163,0.221,0.32|]] с
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7. A solid in contact with a gas at 12 kPa and 25°C adsorbs 2.5 mg of the gas and obeys the Langmuir isotherm. The enthalpy change when 1.00 mmol of the adsorbed gas is desorbed is +14.2 J. What is the equilibrium pressure for the adsorption of 2.5 mg of gas at 40°C? a) 9.9 kPa d) 8.3 kPa b) 10.8 kPa c) 9.1 kPa
A solid in contact with a gas at 12 kPa and 25 °C adsorbs 2.5 mg of the gas and obeys the Langmuir isotherm. The enthalpy change when 1.00 mmol of the adsorbed gas molecules is desorbed is +10.2 J. What is the equilibrium pressure for the adsorption of 2.5 mg of gas at 40°C? Hint: The data are isosteric; use a similar approach to that in Example 19B.2.
+ Moore 5e_Ch11 SP2020.pptx: SP X * OWLV2 | Online teaching and lea X oping Cart | The UAB Blazer x VtakeAssignment/takeCovalentActivity.do?locator=assignment-take [Review Topica) [References) Use the References to access important values if needed for this question. In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g)% H2(g) + % I(g) the following data were obtained: HI), M 0.401 0.201 0.101 5.05x102 seconds 519 779 910 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 0.401 M is s and when the starting concentration is 0.201 M is req (2) 2req The average rate of disappearance of HI from t=0 s to t= 519 s is Ms! (3) The average rate of disappearance of HI from t = 519 s to t= 779 s is Ms! (4) Based on these data, the rate constant for this v order reaction is Submit Answer Retry Entire Group 9 more group attempts remaining Cengage Learning | Cengage Technical Support Tch 55 F7…
A solution of 100 g/L acrylamide in methanol is polymerized at 25°C with 0.1 mol/L isobutyryl peroxide (initiator) whose half life is 9.0 h at this temperature and efficiency in methanol is 0.3. For acrylamide, k,?/k= 22 L mol-' s-l at 25°C and termination is by coupling alone. (a) What is the initial steady state rate of polymerization ? (b) Find the percentage conversion of monomers in the first 10 min of reaction in 1L of 2.5 solution? Acrylamide H H C-NH2 Hint : Find the initial concentration of monomer in mol/L [M] =(100 g/L)/(Molecular weight of acrylamide) Given the half-life time of the initiator used. Find dissociation rate constant of the initiator. In(2) Half-life t/2= kd 1/2 fks [1)* [M] k, 1/2 0.693/K. R = k, [M] kp 2 1/2 - In- %3D [M],