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(a)What is the function of the moderator in a nuclear reactor?
(b) What substance acts as the moderator in a pressurized water generator?
(c)What other substances are used as a moderator in nuclear reactor designs?
Determine the formation constant, Kf, of AC5. Kf=? The solubility of AB(s) in a 1.000-M solution of C(aq) is found to be 0.152 M. What is the Ksp of AB? Ksp=?
Three helium nuclei fuse together, forming one carbon nucleus. The mass of carbon is less than three times the mass of helium. When helium fuses into carbon, which of the following occurs
Titration of the excess unreacted EDTA required 11.6 mL of 0.0200 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-.
Draw the lowest energy conformation of 3-ethyl-2,4,4-trimethylheptane, depicting the C3-C4 bond on a sawhorse.
determine the freezing point depression, delta Tf, for the ionic solution. b. determine m effective for ionic solution. c. determine the van't Hoff factor, i, for the ionic compound.
In the laboratory you dissolve 15.3 g of copper(II) iodide in a volumetric flask and add water to a total volume of 500 mL. What is the molarity of the solution
gold forms a substitutional solid solution with silver. compute the number of gold atoms per cubic centimeter for a
Problem- The decomposition of NH2OH shows a k value of 0.237x10^-4 L/mol.s at 0C and 2.64x10^-4 L/mol.s at 25C. The activation energy is 65.2 kJ/mol. Calculate A (pre exponential factor).
For the gas-phase reaction 2 NO2 + F2 → 2NO2F, the rate constant k is 38 M-1s-1 at 27° C. The reaction is first order in NO2 and first order in F2.
a common laboratory reaction is the neutralization of an acid with a base. when 60.0 ml of 0.25 m nitric at 24.5 degree
Calculate change in heat when 18.80 g of water vapor steam at 100 C condenses to liquid water and then cools to 20.5. the molar heat capacity of water is 75.3 J/ (mol x C). Delta Hvap= 40.67 KJ/mol.
at 298k 125 ml of 0.60 m potassium hydroxide koh is added to 175 ml of 0.40 m hydrochloric acid hcl. what is the final
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