1. What is the possible identity of thè amino acid v [ Select ] Aspartic acid 2. What is the isoelectric point of AA? 2.95 Proline Alanine 3. What is the pKa corresponding to the deprotor Lysine
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![1. What is the possible identity of thè amino acid v [ Select ]
Aspartic acid
2. What is the isoelectric point of AA? 2.95
Proline
Alanine
3. What is the pKa corresponding to the deprotor
Lysine
3.90](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6998f2b6-a989-4766-a4e0-c7abce1cb609%2Fb02f7cc0-380c-4c30-8004-88d3ddbb4135%2F3d94df_processed.jpeg&w=3840&q=75)
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- 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 = 0.944A mixture of three proteins was subjected to ion exchange chromatography using CM-cellulsoe as the stationary phase. The elution buffer had a pH of 7.5. Proteins were eluted by increasing the ionic strength of the buffer. Predict the order of elution of the following proteins:Pepsinogen, pI = 1Cytochrome c, pI = 10.6Myoglobin, pI = 6.880mL of a 0.3M solution of hexapeptide Leu-His-Cys-Glu-Asn-Arg is adjusted to pH=pl. The solution is then titrated with 0.2M HCI to a final pH of 2.1. Sketch the titration curve, labelling the pH and volume axes. Indicate the volume of HCl needed to reach each relevant pKa value and equivalence point(s). Relevant pka values are: 2.1, 4.3, 6.0, 8.3, 9.8, and 12.5.
- Quinine ( C20 H24 N2 O2) is the most important alkaloid derived from cinchona bark. It is used as an antimalarial drug. For quinine, pK, = 5.1 and pK, = 9.7 ( pKp = – log Kp). Only 1 g quinine will dissolve in 1920.0 mL of solution. Calculate the pH of a saturated aqueous solution of quinine. Consider only the reaction | Q+ H2O= QH+ + OH- described by pK, where Q = quinine. pH =The following stock solutions are available to make a protein extraction buffer: 100% Nonidet P-40, 1 M Tris-Cl, and 0.5 M EDTA. What quantity of the original stocks will be needed to make 250 ml of buffer with the following final concentrations: 0.5% Nonidet, 150 mM Tris-Cl, and 10 mM EDTA?Calculate the concentration of Y4-ion in 0.0100 M EDTA solution at pH 6. α4 = 2.2 x 10-5 for pH 6.