The relative displacement (r/ro) of bovine serum albumin was observed as a function of time: t (s) 700 3580 4540 5020 r/r. 1.0129 1.0679 1.0871 1.0965 Given w = 6 260 /s, find the sedimentation coefficient. Assuming v = 7.34x 10 3 m3 kg and p = 9.93 x 102 kg/m3, diffusivity = 6.97 x 10-11 m2/s at 25 °C, determine the molar %3D %3D mass of the sample in kg/mol.

22-30. (a) The mean free path is the average distance a molecule travels before colliding with another molecule. The mean free path, A, is given by A = kT/(V20P), where k is Boltzmann’s constant, T is temperature (K), P is pressure (Pa), and o is the collision cross section. For a molecule with a diameter d, the col- lision cross section is nd. The collision cross section is the area swept out by the molecule within which it will strike any other molecule it encounters. The magnetic sector mass spectrometer is maintained at a pressure of ~103 Pa so that ions do not collide with (and deflect) one another as they travel through the mass analyzer. What is the mean free path of a molecule with a diam- eter of 1 nm at 300 K in the mass analyzer?

11. Order: Ticar (ticarcillin disodium) 1 g IVPB q6h, infuse in 50 mL D5W over 45 minutes. The instructions for the 1 g vial state to reconstitute with 2 mL of sterile water for injection yielding 1g/2.6 mL. At what rate in mL/h will you set the pump?

כטן ε БӘЛ (b) Adsorption of a solute can take place from the liquid surface to a solid surface when the solution is treated with a solid. Assuming that the solute adsorbs strongly compared to the solvent, sketch comparative qualitative plots of x/m (amount adsorbed /g) vs C (concentration in solution) for the individual adsorption of ethyl, n- propyl and n-butyl alcohols from an aqueous solution to a hydrophilic silica sample. Give suitable explanation for the plots. (2)

A 60-year-old woman who weighs 75kg requires a loading dose of an antibiotic to treat an infection. A plasma concentration of 4.5 mg/L of the antibiotic needs to be achieved for optimal therapeutic effectiveness. The volume of distribution (Vd) of this antibiotic is 0.2 L/kg. The salt factor (S) is 0.6 and bioavailability fraction (F) is 1. The antibiotic is available as a 100 mg/mL infusion.Loading dose = Amount of drug in the bodyBioavailability (F) x Salt fraction (S)Amount of drug in the body = Target conc. (C) x Volume of distribution (Vd)How many millilitres of antibiotic infusion need to be administered?State your answer to 1 decimal place.unit- ml

The equation of the straight line determined from a least squares fit procedure for an experiment in which the instrument readout, R, was plotted on the y-axis and the concentration, C, in parts per million was plotted on the x-axis is R = 1.37 C + 0.029 What is the analyte concentration in the unknown if the instrument readout for the unknown is 0.481?

please,don't provide handwriting solution.