What is the retardation factor of a pulse of dissolved benzene move through organic-rich wetland soil (organic carbon fraction of soil, foc=50%) if the effective porosity is 0.4 and the bulk density of the soil is 1.5 g/cm3. Follow these important hints: - Determine organic carbon partition coefficient (Koc)  - Use this Equation:  K oc = K d / f oc to calculate Kd.

Calculate the solubility at 25 °C of CaF2 in pure water and in a 0.0130M NaF solution. You'll find Ksp data in the ALEKS Data tab. Round both of your answers to 2 significant digits. solubility in pure water: solubility in 0.0130 M NaF solution: 0² 02/ X 0x0 00

Calculate the solubility at 25 °C of CaF2 in pure water and in a 0.0030M NaF solution. You'll find Ksp data in the ALEKS Data tab. Round both of your answers to 2 significant digits. solubility in pure water: solubility in 0.0030 M NaF solution: 0.016 0²/ L 00 x10 X n' OXO 3 00 olo A

d. Pressure, kPa 2. a. b. [PVTsim] This is a question regarding phase envelope and equilibrium concept. Using PVTsim with the PR EOS, show the following on the same P-T figure: PT cross section for the equimolar mixture of C₂ and nCs Vapor pressure curve of C2 Vapor pressure curve of nCs. Indicate the critical point of the equimolar mixture clearly. On the same figure, add another PT cross section for 10 mol% C₂ and 90 mol% nCs. Indicate clearly the critical point for this mixture. 7000 C2 -nC5 10 mol% C2 +90 mol% nC5 CP 10 mol% C2+ 90 mol% nC5 50 mol% C2 +50 mol% nC5 CP 50 mol% C2 + 50 mol% nC5 6000 5000 4000 3000 2000 1000 Critical point Critical point 0 250 300 350 400 450 500 Temperature, K C. Consider the mixing of two fluids and y, where =[0] and y=0.5] That is, represents 10 mol% C₂ and 90 mol% 10.9 nCs (part "b"), and represents the equimolar mixture (part "a"). Read the 2 (approximate) intersection of the dew-point curve for y and the bubble-point curve of x. It is…

(4c) Consider a situation where phenol is partitioned between water and benzene with a partitioncoefficient of 1.35in favour of benzene. Suppose we have 2g of phenol dissolved in 250ml of water. How muchphenol will be extracted into 250ml of benzene with a single extractionand howmuch phenol is left in water?.

The O2-consumption curve of a dilute, well-buff ered suspension of mito chondria containing an excess of ADP and Pi takes the following form: Sketch the curves obtained when (a) amytal is added at time t = 1 and (b) amytal is added at t = 1 and succinate is added at t = 2.