In Zubrick’s chapter "The Theory of Extraction, he shows you mathematically why several smaller extractions are more efficient than one big one. The solubility data for benzoic acid is: 10 g/100 mL ether and 1g/100 mL water. What is the partition coefficient, Kp? If you have 300 mL of an aqueous solution containing 1.80 g of benzoic acid, prove that 3 successive extractions using 40 mL of ether each time is more efficient (92% of benzoic acid extracted) than using just one 120 mL extraction (which captures only 80% of the benzoic acid in the ether layer).

In 2002, the rare earth elements mine in mountain pass, california was closed because

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.