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The sedimentation coefficient of a certain DNA in 1M NaCl at 20C was measured by boundary sedimentation at 24,630 rpm. The following data were recorded:
Time Distance x of boundary from center (cm)
16 6.26932 6.35148 6.43864 6.51780 6.60596 6.681
a) Plot log x vs time and calculate the sedimentation coefficient
b) The partial specific volume of the sodium salt of DNA is 0.556 cm3/g. The viscosity and density of the 1M NaCl solution and of water are 1.104 cP, 1.04 g/cm3 and 1.005 cP, respectively. Calculate s20,w for the DNA
Show all the steps in the mechanism for the following reaction, When benzene is mixed with deuterated sulfuric acid, deuterium is slowly incorporated onto the ring. Show the mechanism for this reaction and explain how this relates the sulfonation of ..
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