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Utilizing the Bohr model for hydrogen-like atoms prepare first-order estimates of the energies expected for the Ka, Kß, La, and Lß x-ray fluorescence transitions and the ionization energy of an electron in the K shell. Report the energies in KeV (1 J=6.242x1015 keV).
1.628 G Sample Of A Hydrate Of Magnesium Iodide Is Heated Until Its Mass Is Reduced To 1.072 G And All Water Has Been Removed. What Is The Formula Of The Hydrate?
Celsius and heated to the temperature of 275 degree Celsius at a constant pressure of 0.975 atm. compute the work done?
The weak acid HZ has a ka of 2.55*10^-4. What is the pH of a .075 M HZ? What is the pOH of .045 M HZ?
A beaker of salt water has some solid NaCl at the bottom. What type of solution is in the beaker
State A 130.0 mL sample of a solution that is 2.9×10-3 M in AgNO3 is mixed with a 220.0 mL sample of a solution that is 0.10 M in NaCN. Subsequent to the solution reaches equilibrium, Explain what concentration of Ag+(aq) remains
What is the pH when 50.0mL of a 0.53M solution of CH3NH2 is titrated with 17.70mL of a 0.37M soltion of perchloric acid?
Barium sulfate, BaSO4, is made by the following reaction: Ba(NO3)2(aq) + Na2SO4(aq) à BaSO4(s) + 2NaNO3(aq).
State the equilibrium concentration of each component that makes the solution a buffer solution. Ka = 1.8 x 10-5 for acetic acid.
How many grams of barium hydroxide must be added to 2.37-L of distilled water to make a saturated solution
Aluminum reacts with oxygen gas in a combination reaction to produce aluminum oxide. How many moles of oxygen gas are needed to react with 1.64 moles of aluminum
A student adds 33.0045g of potassium acetate to water and then adds 7.0 ml of 1.0 M HCl to this . the resulting solution is diluted to 250.0 ml calculate the PH of the resulting solution.
A large scale polycondensation reaction of a diol and a diacid is performed at 200 C. At various intervals small samples are removed, introduced into tared conical flasks, quenched in a dri ice/acetone, weighed, dissolved and titrated with a stand..
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