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An open tubular chromatography column is 28.9 m long and has an inner diameter of 0.510 mm. The inside wall is coated with a layer of stationary phase 3.3 ?m thick. Unretained solute passes through the column in 3.86 min, while a certain solute has a retention time of 17.39 min. (a) What are the linear and volume flow rates? (b) What is the capacity factor, k\', and the partition coefficient, Cs/Cm, for this solute? (c) What fraction of time did the solute spend in the stationary phase?
Describe the physical origins of linewidths in absorption and emission spectra. Do you expect the same contributions for species in condensed and gas phases
Calculate the pH of the following solutions with the given [H+] or [OH-] and indicate whether the solution is acidic or basic
If the temperature of the water in your reaction bowl is 23 C, what is the temperature of the hydrogen gas.
a reaction is begun with a reaction mixture containing the following dye 1.0 x 10-4 m bleach 0.10 m when dye 8.0 x
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations. Student performed a sodium borohydride reduction experiment.
A 50 mL soln. of Mg(NO3)2 is mixed with a 50 mL solution of NaOH. The resulting precipitate, Mg(OH)2, that forms is 2.97g. Determine the concentration of solution of Mg(NO3)2?
identities of the components in a mixture by Gas chromatography may be determined by the technique called "spiking".
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations. Student performed a sodium borohydride reduction experiment
calculate the sodium ion concentration in a solution formed by diluting 35.00 mL of a .585 M sodium phosphate solution to a final volume of 145.00 mL
Which two reagents below would you choose to synthesize 3-ethyl-2-phenyl-2-pentene using the Wittig procedure? (triphenylphosphine, solvents, and a base are provided)
A gas sample has an original volume of 680 ml when collected at 720mm and 28C. what will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55C?
The total pressure at equilibrium is 190 mmHg and the compound is found to be 34% disassociated. What is the value of Kp
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