Read the incomplete statement. The scientists _[blank 1)_ and _[blank 2) produced X-ray photographs of DNA. These photographs
were then used by other scientists to determine the structure of DNA.
Which option correctly completes this statement?
(A).blank 1: Rosalind Franklin
blank 2: Maurice Wilkins
(B).blank 1: James Watson
blank 2: Francis Crick
(C).blank 1: Oswald Avery
blank 2: Erwin Chargaff
(D).blank 1: James Watson
blank 2: Maurice Wilkins
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What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

What is the solubility of substance?

Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml