Acompound with a molecular mass of 292.16 was dissolved in water in a 5 ml volumetric flask and the solution made up to the mark. a 1.00 ml aliquot was taken and then placed in a 10 ml volumetric flask and diluted to the mark. the absorbance of this final solution at 340nm was 0.427 in a 1 cm cuvette. the molar absorptivity for this compound is 6130 m1cm1 (a) calculate the concentration of the sample in the cuvette. (b) calculate the concentration of the sample in the 5 ml flask in ppm (c) how many grams of the solid compound were used to make the 5 ml solution?

Achemist at a pharmaceutical company is measuring equilibrium constants for reactions in which drug candidate molecules bind to a protein involved in cancer. the drug molecules bind the protein in a 1: 1 ratio to form a drug-protein complex. the protein concentration in aqueous solution at 25 ˚c is 1.74 x10-6 m . drug a is introduced into the protein solution at an initial concentration of 2.00 x10-6m. drug b is introduced into a separate, identical protein solution at an initial concentration of 2.00 x10-6m. at equilibrium, the drug a-protein solution has an a-protein complex concentration of 1.00 x10-6m, and the drug b solution has a b-protein complex concentration of 1.40 x10-6m.a. calculate the kc value for the a-protein binding reaction.b. calculate the kc value for the b-protein binding reaction.c. assuming that the drug that binds more strongly will be more effective, which drug is the better choice for further research?