An emerging drug has a KD between water and methylene chloride of 5.00. If weextract a 50.00-mL sample of 0.080 M aqueous solution of the drug with 10.00 mL of methylenechloride(a) What is the extraction efficiency?(b) What volume of methylene chloride must we use to extract 99.0% of the solute?

A 300 mL solution containing 1.85 g CaCl2 is mixed with a 500 mL solution containing 1.95 g NaCl. What is the final ppm concentration of Na+, Ca2+ and Cl-?

A 2.1182.118 g sample of a solid mixture containing only potassium carbonate (MM=138.2058 g/molMM=138.2058 g/mol) and potassium bicarbonate (MM=100.1154 g/molMM=100.1154 g/mol) is dissolved in distilled water. A volume of 30.1030.10 mL of a 0.7570.757 M HCl standard solution is required to titrate the mixture to a bromocresol green end point. Calculate the weight percent of potassium carbonate and potassium bicarbonate in the mixture.

A copper(II) sulfate solution is 14.0% CuSO4 by mass. It is simultaneously 1.01 M at 20 °C. (a) Compute the density of this solution. Density= 8 cm-3 (b) What volume of this solution should be used in preparing 1.44 L of a 9.60×10-² M copper(II) sulfate solution? Volume mL