. The distribution coefficient, k = concentration in hexanes ÷ concentration in water, between hexanes and water for solute A is 7.5. What weight of A would be removed from a solution of 10 g of A in 100 mL of water by a single extraction with 100 mL of hexanes? What weight of Awould be removed by four successive extractions with 25-mL portions of hexanes? How much hexanes would be required to remove 98.5% of A in a single extraction?
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Chemistry, 22.06.2019 07:00, uniqueray33
What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will
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Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?
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Chemistry, 22.06.2019 10:50, lejeanjamespete1
8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
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. The distribution coefficient, k = concentration in hexanes ÷ concentration in water, between hexan...
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