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- 2 if there is a stock solution of 2000 (ug/ml) , is it possible to use SERIAL DILUTION to generate the following 8 tubes with their concentrations? A 2000 (ug/ml) B 1500 (ug/ml) C 1000 (ug/ml) D 750 (ug/ml) E 500 (ug/ml) F 250 (ug/ml) G 125 (ug/ml) H 0 (ug/ml)2- How much solution (in ml) of silver nitrate at a molar concentration of 0,0540 mol/l is needed as to receive 200 ml of the solution with desired titrimetric conversion factor of silver nitrate (М=169,863 g/mol) corresponding sodium chloride (М=58,443 g/mol) to be equal to 1,810 ∙10-3 g/ml? Express numerical result with an accuracy of: Х,ХIn basic spectrophotometer, 1. Calculate the concentration of bovine serum albumin (BSA) if 40% of a light beam is transmitted through 2 cm of the cuvette (assume the molar absorption coefficient, e is 43,824 M-1 cm-1). 2. Calculate the %T, if the concentration of BSA in a 2 cm of cuvette is 0.025 mg/mL. and compare between 1 and 2
- A protein required 6.8 min to travel 82 cm to the detector in a 96 cm -long capillary tube with 25.4 kV between the ends. Find the apparent electrophoretic mobility. How many femtomoles of 2.4 μM protein are injected electrokinetically into a 50 μm diameter capillary at 5.0 kV for 3.0 sec. if the sample has half of the conductivity of the background electrolyte.a. State TWO (2) advantages of Inductively coupled plasma-optical emission spectroscopy (ICP-OES) over Flame atomic absorption spectroscopy (FAAS).b. What are the TWO (2) advantages of graphite furnace AAS (GFAAS) over flame AAS (FAAS)?c. What is one of the main disadvantages that most flames used in AAShave?Use correct sig figs The concentration of a purified monoclonal antibody was measured using UV280 nm. The sample was diluted (200 μL of purified antibody in 800 μL buffer) prior to analysis using a spectrophotometer. Calculate the concentration of antibody in the purified fraction if the Abs=0.95 of the diluted antibody. The molar absorptivity is known to be 191,411.6 M-1cm-1 and the molecular weight is 150 kDa. The pathlength for the cuvette is 1 cm.
- A flat (not spherical) tissue engineered skin (thickness 3.9 mm) is attached to the bottom of a dish and cultured with cell media atop it (which has an oxygen concentration of 0.15 mol/m3). The diffusivity of oxygen in the skin is 3.2 E-9 m?/s, and according to experiments that you've performed, you want to make sure that the concentration of oxygen in the device doesn't fall below 0.06 mol/m3. (Below that concentration harms the cells.) The rate of oxygen consumption is -5 E-17 mol/[cell•s]. What is the maximum cellularity (in cells/mL, three significant digits) that this tissue engineered skin can support?A flat (not spherical) tissue engineered skin (thickness 2.5 mm) is attached to the bottom of a dish and cultured with cell media atop it (which has an oxygen concentration of 0.15 mol/m3). The diffusivity of oxygen in the skin is 3.4 E-9 m2/s, and according to experiments that you’ve performed, you want to make sure that the concentration of oxygen in the device doesn’t fall below 0.06 mol/m3. (Below that concentration harms the cells.) The rate of oxygen consumption is -5.9 E-17 mol/[cell◦s]. What is the maximum cellularity (in cells/mL, three significant digits) that this tissue engineered skin can support?Calculations Involving Units, mcg/mg and Other Measurement of Potency. Show your complete solution. 1. A hospital pharmacy has available 2-mL prefilled syringes containing 80 mg of tobramycinand 1.5-mL prefilled syringes containing 60 mg of tobramycin. The syringes are calibratedin 0.25-mL units. Explain how you would prepare a medication order calling for 110 mgof tobramycin to be added to 100 mL of D5W for intravenous infusion.
- 3 Acra Alrich TOI NOF 200 250 300 350 Wavelength (nm) UV/Vis spectrum of four brands of polysorbate 80, a common detergent used in protein purification. From Wuelfin, et al., "Polysorbate 80 UV/vis spectral and chromatographic characteristics-defining boundary conditions for use of the surfactant in dissolution analysis." 3. While the binding of Coomassie blue to proteins can lead to accurate measurements of protein concentration, there are situations where the absorbance values could be misleading. For example, detergents are often used in the purification of proteins. Certain detergents mixed in with the dye could lead to incorrect determinations of protein concentration. Take a look at the spectrum of the detergent polysorbate 80, above. If you had used this detergent to purify the protein in part c above, would you expect it to interfere with your concentration calculations? Why or why not? Absorbance (AU)The protein calcineurin binds to the protein calmodulin with an association rate of 8.9 × 103 M−1 s −1 and an overall dissociation constant, Kd, of 10 nM. Calculate the dissociation rate, kd , including appropriate units.1.. What is the useful operating volume range of a Gilson P-10 pipette? Where did you find this information? 2.. Which micropipette should be used to dispense 4.50 x10-4 L of water? Explain your choice. 3. What should 2.50 x 10-4 L of water weigh at 27 °C? (Show calculations and include proper units with your answer) 4. Determine the temperature in the room where a gravimetric pipette calibration is being conducted. A 100 μl volume yielded a weight of 99.46 mg. Show your work for full credit.