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For serine, pKalpha-COOH = 2.21, and for leucine, pKalpha-COOH = 2.36. If a mixture of 10 millimoles each of serine and leucine at pH = 2.40 is passed through a cation-exchange column and eluted with additional buffer at pH = 2.40, which of the following will take place? A. Serine and leucine will elute together. B. Neither serine nor leucine are eluted from the column because the pH of the elution buffer is too low. C. Neither serine nor leucine are eluted from the column because the pH of the elution buffer is too high. D. Leucine will elute first, followed by serine. E. Serine will elute first, followed by leucine.
Methanol (CH3OH) can be manufactured by the reaction of gaseous carbon monoxide and hydrogen. Suppose 68.5 kg of gaseous carbon monoxide is reacted with 8.60 kg of gaseous hydrogen. If 37.5 kg of methanol is actually produced, what is the percent ..
The enthalpy of hydration associated with anhydrous LiI forming LiI?2H2O is -45.53 kJ/mol. The enthalpy of solution for LiI?2H2O is -14.77 kJ/mol. What is the enthalpy of solution for LiI
A scuba diver 40 ft below the ocean surface inhales 50.0 mL of compressed air mixture in a scuba tank at a pressure of 3.00 atm and a temperature of 8 degrees C
A trisubstituted cyclohexane compound is given below in its chair conformation. Draw the corresponding planar (overhead) representation, using wedge-and-dash bonds to indicate the substituent positions
if 2 mole of N2 and 5 mole of H2 in a closed container initially at STP react, calculate the final pressure in the flask at 0C.
If the sample of the complex ion compound that you prepared had not thoroughly dried, but contained traces of water or ethanol would this make your value of x too high or too low? Or would it not affect your results at all? Explain.
what effect does the presence of sodium sulfite group on methyl orange have on the solubility of methyl orange in water
Consider the equilibrium represented by the following equation: Heat + H2O(l) H2O(g) in which T=373K, P=101kPa Which of the following will favour the reverse reaction? (a) The total volume of the system is increased
At what pH must solutions of nickel (II) ions be maintained in order to prevent precipitation of the hydroxide
Which process will likely increase the solubility of solid KCl in water? Stirring the mixture. Increasing the surface area of KCL * Raising the temperature of the mixture *lowering the temperature of the mixture
What monatomic ions do selenium (Z = 34) and cesium (Z = 55) form? (Type your answer using the format [Cu]+ for Cu+ and [Cu]2+ for Cu2+.)
What is the Henry's law constant for the gas if the partial pressure of the gas in air is .0088 atm?
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