Exam (308).pdf - Question(II Estimate the time needed for a glycine molecule(see Table 13\u00e2\u20ac\u201c4 to diffuse a distance of 25 \u00ce\u00bcm in water at 20\u00c2\u00b0C

Exam (308).pdf - Question(II Estimate the time needed for a...

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Question: (II) Estimate the time needed for a glycine molecule (see Table 13–4) to diffuse a distance of 25 μm in water at 20°C if its concentration varies over that distance from 1.00 mol/m 3 to 0.50 mol/m 3 Compare this “speed†± to its rms (thermal) speed. The molecular mass of glycine is about 75 u. Answer : Calculate the time for the diffusion process. Here, is average concentration, is the change in concentration, is diffusion constant, is time for the diffusion process, and is the length or distance for the diffusion is.
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  • Spring '17
  • John DOe
  • Velocity, average concentration

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