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Answers to Questions, Soil Minerals Questions 7, 10, 11, 12 and 14

Answers to Questions, Soil Minerals Questions 7, 10, 11, 12 and 14 Also includes calculations of recoveries of parent X, intermediates and CO 2 (Pesticide Fate, Degradation / Labeled). 7. KAlSI 3 O 8 = Si 4 Al 4 O 10 (OH) 8 + Al(OH) 3 L Al = 1 R Al = 5

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Answers to Questions, Soil Minerals Questions 7, 10, 11, 12 and 14

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  1. Answers to Questions, Soil Minerals Questions 7, 10, 11, 12 and 14 Also includes calculations of recoveries of parent X, intermediates and CO2 (Pesticide Fate, Degradation / Labeled)

  2. 7. KAlSI3O8 = Si4Al4O10(OH)8 + Al(OH)3 L Al = 1 R Al = 5 5KAlSI3O8 = Si4Al4O10(OH)8 + Al(OH)3 L Si = 15 R Si = 4 5KAlSI3O8 = Si4Al4O10(OH)8 + Al(OH)3+ 11Si(OH)4 L O = 40 R O = 65 5KAlSI3O8 + 25H2O = Si4Al4O10(OH)8 + Al(OH)3 + 11Si(OH)4

  3. 5KAlSI3O8 + 25H2O = Si4Al4O10(OH)8 + Al(OH)3 + 11Si(OH)4 L H = 50 R H = 55 5KAlSI3O8 + 25H2O + 5H+ = Si4Al4O10(OH)8 + Al(OH)3 + 11Si(OH)4 L K = 5 R K = 0 5KAlSI3O8 + 25H2O + 5H+ = Si4Al4O10(OH)8 + Al(OH)3 + 11Si(OH)4 + 5K+

  4. 10. K[Si7.5Al0.5]Al3.5Mg0.5O20(OH)4 = (Al(OH)2.6)z[Si7.5Al0.5]Al3.5Mg0.5O20(OH)4 Charge on (Al(OH)2.6) = 0.4 z = 1 / 0.4 = 2.5 K[Si7.5Al0.5]Al3.5Mg0.5O20(OH)4 + 5/2 (Al(OH)2.6)0.4+ = (Al(OH)2.6)2.5[Si7.5Al0.5]Al3.5Mg0.5O20(OH)4 + K+

  5. 11. 3NaHCO3 = Na3H(CO3)2 2H2O 3NaHCO3 = Na3H(CO3)2 2H2O + CO2 3NaHCO3 = Na3H(CO3)2 2H2O + CO2 L O = 9 R O = 10 3NaHCO3 + H2O = Na3H(CO3)2 2H2O + CO2 Le Chatelier's principle, reaction to left

  6. 12. CaSO4 2H2O CaMg(CO3)2 Ca(1 - y)MgyCO3 ½ CaMg(CO3)2 + (½ - y) CaSO4 2H2O = Ca(1 - y)MgyCO3 + (½ - y)MgSO4 7H2O Ca, Mg, CO3 and SO4 units OK in mass but have imbalance in H2O L = 2 x (½ - y) = 1 – 2y R = 7 x (½ - y) = 3½ - 7y

  7. ½ CaMg(CO3)2 + (½ - y) CaSO4 2H2O + ½ (5 - 10y)H2O = Ca(1 - y)MgyCO3 + (½ - y)MgSO4 7H2O L H = 2 + 5 – 14y = 7 – 14y R H = 7 – 14y = 7 – 14y y = 0.03 ½ CaMg(CO3)2 + (½ -y) CaSO4 2H2O + ½ (5 – 0.3)H2O= Ca(0.97)MgyCO3 + (0.47)MgSO4 7H2O

  8. 14. Al0.30[Si7.5Al0.5]Al3.6Mg0.4O20(OH)4 + CaSO4 2H2O = Ca0.45[Si7.5Al0.5]Al3.6Mg0.4O20(OH)4 + AlOHSO4 5H2O Al0.30[Si7.5Al0.5]Al3.6Mg0.4O20(OH)4 + 0.45CaSO4 2H2O = Ca0.45[Si7.5Al0.5]Al3.6Mg0.4O20(OH)4 + 0.3AlOHSO4 5H2O + 0.15SO42- Work with 0.45CaSO4 2H2O = 0.3AlOHSO4 5H2O + 0.15SO42- L O = 0.45 x 6 = 2.7 R O = 0.3 x 10 + 0.15 x 4 = 3.6 0.45CaSO4 2H2O + 0.9H2O = 0.3AlOHSO4 5H2O + 0.15SO42-

  9. 0.45CaSO4 2H2O + 0.9H2O = 0.3AlOHSO4 5H2O + 0.15SO42- L H = 0.45 x 4 + 0.9 x 2 = 3.6 R H = 0.3 x 11 = 3.3 0.45CaSO4 2H2O + 0.9H2O = 0.3AlOHSO4 5H2O + 0.15SO42- + 0.3H+ 0.45CaSO4 2H2O + 0.6H2O + 0.3OH- = 0.3AlOHSO4 5H2O + 0.15SO42-

  10. Parent CV = μmole μmole / μmole0 Metabolites (dpm / m) x mT = dpmT dpmT – (dpm0 / μmole0) x μmole = dpmMETA dpmMETA / (dpm0 / μmole0) = μmoleMETA μmoleMETA / μmole0

  11. 14C-CO2 (dpm / m1) x mT1 = dpmCO2 dpmCO2 / (dpm0 / μmole0) = (μmoleCO2)1 (μmoleCO2)1 / μmole0 (dpm / m2) x mT2 = dpmCO2 mT2 = mT2* + m1 dpmCO2 / (dpm0 / μmole0) = (μmoleCO2)2 (μmoleCO2)2 / μmole0

  12. Time Parent Metabolites CO2 d P / P0 M / P0 CO2 / P0 0 1.000 0.000 0.000 2 0.819 0.178 0.004 4 0.670 0.316 0.014 6 0.549 0.423 0.029 8 0.449 0.504 0.047 12 0.301 0.607 0.092 16 0.202 0.655 0.143 20 0.135 0.669 0.196 24 0.091 0.660 0.249 32 0.041 0.608 0.351 40 0.018 0.539 0.443 48 0.008 0.468 0.523 56 0.004 0.403 0.593 72 0.001 0.295 0.704 88 0.000 0.215 0.785 104 0.000 0.156 0.844 120 0.000 0.113 0.887

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