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- What is the kinetic property observed in suspension? What is the optical property observed in solutions?What is the main difference between molecular diffusion and mechanical dispersion in terms of contaminants moving through unsaturated and saturated groundwater?3.1 Calculate the volume of concentrated (98% v.v) H2SO4 that you will need to prepare 250ml of an 5.4 M H2SO4 solution. Density of 98% v.v H2SO4 = 1.84 g/cm3
- Explain the results of this chart using information on diffusion and osmosis through the selectively permeable egg shell membrane.Two students measured NH3 in the aquarium and observed values of 106 and 115 mV. What NH3 nitrogen concentration (in ppm) should be reported by each student?Determine the mole fraction of p-dichlorobenzene dissolved in 1.00L of cyclohexane that shifts the vapor pressure from 78mmHg to 70 mmHg. Can you determine the mass of solute dissolved?
- What volume (in microlitres) of a stock solution of 25% KCl would you need to generate 12.5mL of a 0.075% solution of KCl. What volume (in microlitres) of a stock solution of 25% KCl would you need to generate 12.5mL of a 0.075% solution of KCl. (MW of KCl is 74.55)Calculate the mass of sufgar in 500.0 mL of a 3.25% (w/v) sugar solution. The density of the unbknown solution is 1.079 g/mL. Calculate the specific gravity of the solution. Assume that the density of wter is 1.000 g./mL.What are the true/theoretical density values of each concentration of NaCl: 15%, 20%, and 25%?. Assuming that the total volume of solution (water being the solvent) is 100mL?
- Prepare 0.1N H2SO4 solution of 250ml volume. (Density of H2SO4 is 1.84 and purity is 98 %)Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?The solubility of benzoic acid in water is 0.21g per 100mL of water at 10 degrees celsius, 0.27g per 100mL at 18 degrees celsius, and 6.80g per 100mL at 95 degrees celsius. A. At least how much water would be needed to dissolve a 2.00g sample of benzoic acid at 95 degrees celsius? B. If you carried out a recrystallization by dissolving your 2.00g sample in water at 95 degrees celsius, then cooling it to 18 degrees celsius, what would be the maximum yield of benzoic acid? How would the yield be affected if the recrystallization mixture was cooled to 10 degrees celsius instead?