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Derive an expression for the elution time of charged solute undergoing electrophoresis in a CE unit with capillary length L. Remember that the electric field can be expressed as voltage per length. Your final answer should contain the voltage, capillary length and electrophoretic mobility.
Calculate the concentration of HC2H3O2 or NH3 in each of the solutions you measured. By how many units did the pH of a solution of a weak base or acid
The activity of an enzyme is close to zero at pH = 10 and above and high at pH = 6 and below. The activity of this protein probably depends upon the presence of an amino acid with R-group
The H+ released in the eluate required 16.98 mL of 0.1024 M NaOH to reach a phenolphthalein end point. Calculate the percent zinc in the sample. Calculate the value of n for the data in the equation (the n on the H20).
Calculate the amount of heat required to completely sublime 61.0 g of solid dry ice CO2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 {kJ}/{mol}.
Cobalt-60 is a beta emitter with a half life of 5.3 years. Approximately what fraction of cobalt-60 atoms will remain in a particular sample after 12.0 years?
Write out the un-ionized structure of valine & phnylalanine. Do either have enantiomers? Write the zwitterion structures of both.
calculate the expected change in temperature for 4.5 g of NH4NO3 dissolved in 100.0 mL of H20. Assume that the calorimeter absorbs no heat. (ie. Ccal=0)
In a calibration of a calorimeter, 50.0 g of water at 60.0 c is added to 50.0 g of water at 20.0 c to give a mixture at 39.0 c. what is the heat capacity of the calormieter used in this experiment. If calorimeter has a mass of 5.4 g, what is it sp..
Calculate the expansion work done when 50g of water is electrolysed under constant pressure at 25C.
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
list all possible products of acetaldehyde (ethanal) was reacted with acetone in an aldol condensation
Write out the additional equations you would need to consider. d. Confirm that the number of equations is equal to the number of unknowns.
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