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Many proteins contain metalporphyrin molecules that can be modeled as a planar square with an edge length of10Å. The π system can be described as electrons in a box1. Write down the Schroedinger equation for the square and find the eigen values and eigen functionsof the system.
2. Use the electron masskgand Jsecand the length of the edge of the square to determine theenergy levels in cm-1as a function of the two indices nxand nyfor the particle in a square). You mayuse any book with a table for conversion of energyunits. It is recommended to work first with a single system(meter/kilogram/second?) and then convert the result tocm-1.
3. Electrons enter the wave functions as pairs. I.e. to every wave function wecan put two electrons and we start with the lowest energy states and go up. The heme has 18 electrons. What is the lowest energy absorption (moving electron from occupied to empty orbital) that we can have in the mode? (experimentally the excitation is of 17,000cm-1).
2 g of a hydrocarbon fuel is burned in a colrimeter that contains 250 grams of water initially at 25 degrees celcius. After the combustion, the temperature is 26.55 degrees celcius.
Determine the mass of 100 mL of solution for this reaction: the results were 2.05 g of NaOH, 102.05 grams (total solution-when added with the water).
What is the dissociation constand, Kd, of a ligand with a percent occupancy
Calculate the pH of a buffer that is 0.158 M HClO and 0.099 M NaClO. The Ka for HClO is 2.9 x 10-8
A volume of 40.0 ml of aqueous potassium hydroxide was titrated against a standard solution of sulfuric acid. What was the molarity of the solution if 13.2ml of 1.50 M was needed
Calculate the solubility of Ag2CrO4 in grams per liter under following conditions (the solubility product constant for silver chromate is 1.1 x 10-12)
the activity of a radioisotope is 3000 counts per minute at one time and 2736 counts per minute 48 hours later. what is
Calculate the heat required to raise the temperature of 1.5 L of a liquid with a density 0.75 g/mL and a specific heat of 2.2 J/g/K
solid calcium carbonate caco3 is able to remove sulphur dioxide from waste gases by the reactioncaco3 so2 other
A crystalline unit cell contains oxygen atoms on all edges of the cell and rhenium atoms on each corner. What is the formula for rhenium oxide
The photon emitted or absorbed during an electronic transition between n = 1 and n = 2 in a hydrogen atom has a wavelength in the visible portion of the electromagnetic spectrum and an energy that is greater than a similar electronic transition
A cylinder with a piston contains 897 ml of dry oxygen at a pressure of 582 mm Hg and a temperature of 327 K. If the temperature is reduced to 286 K and the pressure increased to 628 mm Hg what is the new volume ?
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