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Heavy water, D2O (molar mass = 20.03 g mol-1), can be separated from ordinary water, H2O (molar mass = 18.01), as a result of the difference in the relative rates of diffusion of the molecules in the gas phase. Calculate the relative rates of diffusion of H2O and D2
Problem- Place each charge form of alanine under the pH condition where it would be the predominant form. The pKa values for the carboxyl group and amino group of alanine are approximately 2.3 and 9.7, respectively.
compute the hydroxide ion concentration in a nh3 solution that is 0.091 m and 0.028 m nh4cl. kb of nh3 is 1.8 x
What types differences in the H-NMR spectra of starting material and product do you expect to see camphor, borneol
After a 5% HCl extraction of an ether solution, that initially contains dissolved carboxylic acid and amide, what component(s) would be found in the aqueous layer
Using the inverse square law of radiation, what Geiger counter reading would you get for a radioactive material when you are 3 feet from the source (assume an initial reading of 6300 R at a distance of 1 foot from the source)?
If 125 grams of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous magnesium sulfate will remain
The equilibrium constant expression for the reaction 2BrF5(g) Br2(g) + 5F2(g) is A) Kc = [Br2] [F2] / [BrF5] D) Kc = [BrF5]2 / [Br2][F2]5 B) Kc = [Br2] [F2]5 / [BrF5]2 E) Kc = 2[BrF5]2 / ([Br2] × 5[F2]5) C) Kc = [Br2] [F2]2 / [BrF5]5
The activation energy of a certain reaction is 32.3kJ/mol . At 20 degrees C, the rate constant is 0.0130s^-1. At what temperature would this reaction go twice as fast? The equation that is given is ln(K2/K1)=Ea/R((1/T1)-(1/T2)) a. what is R in thi..
An industrial chemist 2.00 moles each of h2 and co2 in a 2.00 L container at constant temperature of 800 degree celcuis. this reaction occurs:
If the rate constant of a first order reaction is 4.87X10-5 s-1 at 15 degrees C compute the rate constant at 80 degrees C if the activation energy is 250 Kj/mole (R=8.314J/K)
Silver chloride will precipitate out of solution, leaving an unsaturated solution of AgCl. D) Nothing will happen since NaCl and AgNO3 are both soluble compounds.
The enthalpy of vaporization of water at 373 K and 1 bar is 40.7 kJ/mol and the molar heat capacities are 75.3 J/(mol K) for liquid and 33.6 J/(mol K) for gaseous water. Find the enthalpy of vaporization of water at 273 K and 1 bar.
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