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A solution of Na2CO3 contains 53g of solute in 200ml of solution. What is the molarity of this solution.
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- Given a stock protein solution with a concentration of 3 mg/ml, determine the protein concentration of a solution made by mixing 5 μl of the stock with 5 μl of a buffer.What is the pH of a buffer of a buffer system that contains a weak acid of .19 M and conjugate base of .12 M ? The Ka of the acid is 5.6x 10 -6 pH= pKa + log ( [A- ]/[HA]) please show me step by stepIn order to make a solution of the concentration 0.364 M, what mass of NaCl should bedissolved in 152 mL of water?
- What is the molarity of a 30% solution of NaCIThe weak acid HA is 2% ionized (dissociated) in a 0.20 M solution. (a) What is Ka for this acid? (b) What is the pH of this solution?You have given two proteins with a pI of 4.5 and pI of 7.7? Using an anion-exchange column, how can these two proteins be separated. What buffer could you prepare?
- An aqueous solution contains 0.448 M dimethylamine ((CH3)2NH).How many mL of 0.240 M hydroiodic acid would have to be added to 150 mL of this solution in order to prepare a buffer with a pH of 10.500? ______________mlHow much of the enzyme proteinase k (solute) is required to make 250ml of a solution with a concentration of .01mg/ml? (Weight/volume ratio)A 0.10 M solution of the deadly poison hydrogen cyanide, HCN, has a pH of 5.2. Calculate the [H3O+] of the solution. Is HCN a strong or a weak acid?