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Utilizing the Bohr model for hydrogen-like atoms, make first-order approximates of the energies expected for the Kα, Kβ, Lα and Lβ x-ray fluorescence transitions as well as the ionization energy of an electron in the K shell. Report the energies in KeV (1 J=6.242x1015 keV).
which of the following processes are at equilibrium? a)opposing rates of reaction are equal. b)the rate of the forward reaction is faster than the rate of the reverse reaction. c)concentrations of reactants and products do not change.
An optical pure alkyl chloride has a rotation of [alpha]d of +12.3 while the coresponding alcohol has [alpha]d +10.8. in a reaction of this alkyl chloride with NaOH the resulting alcohol shown alpha d = -8.4. how much of the substituion proceeded b..
several questions regarding the volatility, bioaccumulation potential and toxicity of BTEX compounds commonly present in the light fraction of gasoline. You find the following data from a reference book (E. R. Weiner, 2000) and try to help him.
A metal, M, was converted to the chloride, MCl2. Then a solution of the chloride was treated with silver nitrate to give silver chloride crystals, which were filtered from the solution.
write the equation of the following drugs with water- 1) benzoic acid with water
the reduction of 9-fluorenone to 9-hydroxyfluorene by sodium borohydride. What is the limiting reagent in the following procedure?
How does the addition of 10 ml of 1M KCl change the solubility of Ca(OH)2 in an aqueous solution
a balloon is filled with helium to a volume of 25 l at 100kpa pressure and 25degc. the balloon is then released. what
If the pressure exerted by ozone, in the stratosphere is 3.0*10^-3 atm and the temperature is 253 K, how many ozone molecules are in a liter?
Boron has two naturally occurring isotopes, 10B (19.9%)and 11B (80.1%). Although the B2 moleculedoes not exist naturally on Earth, it has been produced in the laboratory and observed in stars. (a) How many differentB2 molecules are possible? (b) W..
Which of the following would you expect to be a molecule and which would you expect to be part of an ionic solid. Drag the appropriate compounds to their respective bins. CO, NO, LiCl, HBr, BaS, RbCl, SrO, LiBr
Using your mean experimental value of R =20 ,and of n= 1.00, calcuate the molar volume of your H2 at STP (standar T=273 K,P= 760mm Hg),using the ideal gas law
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