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Write down and explain the feature(s) in the Schrödinger equation that lead to the "electron correlation problem". Next, explain the approximation(s) that lead to the introduction of effective nuclear charge (Z Effective). Be sure to define effective nuclear charge in your discussion and explain the role and physical significance of the shielding (screening) constant (s).
Calculate delta rG^o for the reaction below at 25 degrees C. CS2(g) + 3Cl2(g) -> S2Cl2(g) + CCl4(g) given delta rH^o = -231.1 kJ/mol-rxn and delta rS^o = -287.6 J/K*mol-rxn
write a detailed mechanism for the reaction of salicylic acid with acetic anhydride showing clearly the function of the catalyst, sulfuric acid.
A student has a sample (less than 100 mg) that she would like to test for presence of lead. She has access two different atomic absorption spectrometers (flame and furnace) that could be used for analysis.
One of the possible consequences of climate change is an increase in the temperature of ocean water. The oceans serve as a "sink" for CO2 by dissolving large amounts of it. How would the solubility of CO2 in the oceans be affected by an increase in..
what would its speed be just before striking the ground? Ignore the effects of air resistance
If a 200 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.5 by 1.0 ft , what is the average thickness of the sheet in meters?
Problem- A 5.50 L of sample of gas is cooled from 91 degrees Celsius to a temperature at which its volume is 4.10 L. What is this new temperature. Assume no change in pressure of the gas.
The energies of these two objects initially have the values indicated; the objects are then brought into thermal contact with each other. Explain what happens subsequently and why, without using the word "temperature."
Air is 21% oxygen, 78% nitrogen, and 1% other gases. What is the minimum volume of air in liters needed to extract 65 L of oxygen
A cleaning solution is found to have a [OH-] = 3.2 x 10-12M. What is the [H3O+] and is the solution acidic or basic?
Be able to utilize hydroboration/oxidation for alkenes to generate the opposite regionselectivity from acid-catalyzed hydration, as well as recognize how the mechanism drives this selectivity, and the stereospecificity, of the reaction.
Very often proteins end up in a solution of high concentration of salts at the end of a purification process. Propose a method to remove these salts.
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