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Porphyrin is a large flat conjugated molecule explains which can be thought of as having a square box shape. Apply the 2D particle in a square box model to the 22π elctrons of porphyrin. The length of each side of the box (L) is 615pm. The 2D model can encompass degenerate energy levels. For various combinations of the n(x) and n(y), compute the energies of the eleven lowest energy levels which will accommodate the 22π electrons.
A primary alkyl halide reacts with a strong nucleophile. The reaction will proceed via which of the following mechanism(s)? Answer SN1, SN2, E1, E2, or SN1 and E1
Describe the major organic product(s) of this reaction. CH3C?CD + CH4 or CH3C?CCD or CH3C?CCH3 or CH3C?CD + CH3D or CD3C?CD3
Draw a detailed mechanism for the formation of 1,4-di-t-butyl-2,5-dimethoxybezene from t-butyl alcohol.
a gas has a volume of 4.00 l at 0 degrees celius. what final temperature in degrees celcius is needed to change the
How many moles of ions are in 1.60 mol of K2SO4?
Which solution will have the lowest boiling point?
It is 2734 mi between Phoenix, Arizona, and Philidelphia, Pennsylvania. What is this distance in km?
If 122 g of Hg2Cl2 is reacted with excess ammonia, what is the expected yield, in moles and grams, of elemental mercury. (show your calculation)
When 49.4 mL of 0.721 M lead(II) nitrate reacts with 99.6 mL of 0.807 M sodium chloride, 0.830 kJ of heat is released at constant pressure. What is DH° for this reaction
A spaceship's maneuvering engine burns hydrogen and oxygen. Hydrogen is to delivered to this engine at 1.1atm pressure and 1500l required for a planned maneuver. What pressure must the holding tank be charged with if its volume is 40l? assume the ..
A certain quantity of a gas occupies 61.3 mL at 68C. If the pressure remains constant, what would the volume of the gas be at 17C?
prepare 250.00 mL of 0.150 M ammonium ion solution beginning with solid ammonium phosphate, (NH4)3 PO4.
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