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- Lab Data Verify your concentration calculation. Did you report your data to the correct number of significant figures? Stock solution Concentration iron(III) nitrate 0.40000 [Fe(NO3)a] (M) Color of iron(III) nitrate yellow Concentration potassium thiocyanate [KSCN] (M) 0.00300 Color of potassium thiocyanate colorless Volume iron(III) nitrate (mL) 10.00 Volume potassium thiocyanate (mL) 2.00 Volume DI water (mL) 8.00 Concentration iron(III) thiocyanate ion in stock solution [FESCN2"] (M) 0.000300 Color of stock solution red-orange Diluted solutions Solution 1 Solution 2 Solution 3 Volume stock solution (mL) 4.00 4.00 4.00 Volume DI water (mL) 1.00 2.00 3.00 Concentration iron(III) thiocyanate ion [FeSCN2*] (M)Milligrams 47.0 milligrams = Multiple Choice 0.47 decigrams 4.7 centigrams 0.047 grams 0.00047 hectograms All of the answer choices are correct.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)
- 10 tab of acetaminophen 500 mg molar absorptivity= 14520 @ 243nm. The total weight of the 10tab is 5278 mg. I take a sample equivalent to 100mg of tablet and I diluted it in 100mL, I took an aliquot of 10mL and I diluted it in 250mL, of these I took 25mL and I diluted them in 250mL. Calculate the weight per tablet. Absorbance = 0.944If equal portions of tretinoin gel, 0.1 % w/w and 0.4 % w/w are combined, what would be the resultant percentage strength?Guanosine (C10H13N5O5) in solution has a maximum absorbance at a wavelength of 275 nm. The molar extinction co-efficient at this wavelength is 84M−1cm−1and the path length is 24.7 cm. Through the use of a spectrophotometer, it is found that the that A275= 1.48. What is the concentration of the guanosine solution in grams/litre? Molecular weights (g/mol): C-12, H-1, N-14, O-16 Select one: A. 0.201869 g/L B. 0.435188 g/L C. 0.059919 g/L D. 0.294046 g/L E. 0.000713 g/L
- Can you help me with this activities and explain, I can’t identify the structure.ok-Personal Microsoft Edge com/maildeeplink 021 pdt Download Print Save to OneDrive 1. Draw the structure of the pentapeptide Gln-Trp-His-Glu-Tyr that would predominate in aqueous solution at pH3D10.3. (Relevant pka values are: 2.2 4.3, 6.0, 9.8, and 10.1) Acp is adiusted toA 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?
- Three dipeptides are separated by electrophoresis at ph 5.8. if the dipeptides are Arg-trp, Asp-thr, and Val-met, describe the motion of each with respect tothe positive and negative electrodes in the electrophoresis apparatus.10 mL of 0.5 M CuSO₄ * 5H₂O solution from 10 M CuSO₄ * 5H₂O solutionYou own a compounding able pharmacy and are presented with a presciption for fortified gentamicin eye drops 5mg/mL. You have in stock a gentamicin injection at 40mg/ml and 5ml gentamicin eye drop labled to contain 3mg/ml. How many mililiters of the injection should be added to the 5ml of the commercial eye drop to gice it a 5mg/ml "fortifited" concentration?