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Assume that the trial wave function = (1-ar)-2 is chosen to explain the hydrogen atom, where a is a variable parameter. Presume that is normalized. The resulting energy expression for the hydrogen atom is E= a2/5-a/2 in atomic units.Find out the best value for the parameter a, for the energy and compare this to the exact value, E = -0.5 atomic units
how much 0.500 M Au(NO3)3 solution would you need to prepare to accomplish this? 3) If the price of the base metal is negligible, and the price of gold is $ 1791.05/oz. ( as of the date of this publication), what is the value of the medallion?
Calculate the molarity if 14.5 g of NaOH was dissolved in enough water to give 360 mL of solution.
A molecular compound contains 92.3% carbon and 7.7% hydrogen by weight. If 0.152 mol of the compound weighs 3.95 g, what is its molecular formula?
briefly describe how the atomic radii and ionization energies of group 1a1 elements compare with those of group 8a18.
Aluminum dissolves in HCL according to the equation written below, whereas copper does not react with HCL: 2Al+6HCL ---> 2AlCl3 + 3H2 a 35 gram sample of copper-aluminum alloy is dropped into .750 L of 3M HCl
If the methane contained in 3.00 L of a saturated solution at 25 was extracted and placed under STP conditions, what volume would it occupy.
we are asked to explain the ph and how to find hydrogen ion concentration.find the ph of an acidic substance of your
A radioactive element has a half-life of 2.2 hours. How many hours will it take for the number of atoms present to decay to one-sixteenth of the initial value? Show your calculations please.
The reaction (CH3)3 CBR+ OH------)(CH3)3 COH+Br in a certain solvent is first order with respect to (CH3)3 CBr and zero order with respect to OH. In several experiments, the rate constant k was determined at different temperatures. Determine the a..
At pH 12, magnesium hydroxide is insoluble and does not react with EDTA. The titration of a hard water sample at pH 12 thus yields results for calcium only. A 250.0-mL sample of tap water was adjusted to pH 12 and titrated with 0.01056 EDTA using ..
write the equation for self-ionization of water and why ammonia is a weak base.
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
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