A 4.6 mm X 25-cm column that contains 5 um packing L7. The value 5 um represents; O a. length of the column O b. Internal diameter of the column O C. Particle Size of the packing material o d. volume of the column
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- What is the diffusion coefficient of a membrane-bound protein of molar mass 79,300 daltons at 37°C if the viscosity of the membrane is 1 poise (0.10 N-s-m-2)? Assume that this protein is an unhydrated, rigid sphere that has a density of 1.4 g-cm-3. 4.0 8.05e-12 x m².s-1 What is the average distance traveled by this protein in 2.3 s? 4.0 6.085e-6 x ÅThe purification of hydrogen gas is possible by diffusion through a thin palladium sheet. Calculate the number of kilograms of hydrogen that pass per hour through a 2.8 mm thick sheet of palladium having and area of 0.72 m^2 at 500 C. Assume a diffusion coefficient of 7.8 x 10^-8 m^2/s, that the concentrations at the high- and low- pressure sides of the plates are 3.4 and 0.58 kg/m^3 of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained.Describe the process of simple diffusion?
- 6. why is the segmental mobility of a polymer reduced by the presence of the filter?The diffusion coefficient of CCl4 in heptane at 25 °C is 3.17 × 10−9 m2 s−1. Estimate the time required for a CCl4 molecule to have a root mean square displacement of 5.0 mm.Calculate the viscosity of a liquid sample of density 1.2 g/cm3 ,taking into account that a metallic sphere of density 8.1 g/cm3 and 10 mm diameter takes 8 seconds to move one meter.
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- 1) For a crystalline substance with a hexagonal unit cell, the distance interplanar d is given by the expression. Consider graphite, for which a = 0.247 nm and c = 0.679 nm. On a standardized diffractogram with Cu Kα radiation ((λ = 1.5418 Å)), where angle 2θ will be observed the Bragg 002 peak of graphite?1. "Band structure" of "Hatom chain" and "H mole chain" are drawn as "graphs" and "intermediate process". Describe it in detail.Calculate the surface excess of solute given the following data:Molar concentration in bulk solution as prepared:0.100 mol dm-3Molar concentration in bulk solution as determined:0.981 mol dm-3Total volume of solution: 100 cm3Radius of beaker containing the solution: 2.50 cm