Access the Chart of the Nuclides for 2,200 m/sec or thermal neutrons, and determine the total microscopic cross sections for the following isotopes: 1. U235 2. Pu239 3. Be9 4. C12 Estimate their: 1. Number densities, 2. Total macroscopic cross-sections, 3. Total mean free paths. Calculate the total cross sections and the mean free paths of thermal neutrons in the following moderators: 1. H2O 2. D2O A stainless steel composition is 69 w/o Fe, 17 w/o chromium, 12 w/o nickel and 2 w/o molybdenum. Calculate its absorption macroscopic cross section and its absorption mean free path for thermal neutrons. For a thermal neutron flux of 1010 neutrons / (cm2.sec), estimate the absorption rate density in the stainless steel.

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

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

Why is silver chloride is an ionic compound