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The particle in a one dimensional box is sometimes utilized as a model for pi electrons in a conjugated bond system.
b) The molecule has 4 pi electrons. Presume that 2 are in the n=1 state and 2 are in the n=3 state. Determine the frequency and wavelength of the light absorbed if an electron makes a transition from the n=3 to n=4 state?
How many units would have been produced during the second quarter under Lean Production?
A flask has a mass of 78.16g when empty and 593.56g when filled with water. When the same flask is filled with concentrated sulfuric acid, its mass is 1026.57g. Calculate the density of concentrated sulfuric acid.
Using the following spectral information, determine the name of unknown organic compound A. For full credit, explain why/how the spectral information led you to your answer.
The nitrite ion (NO2-) is commonly determined by a colormetric procedure using a reaction called the Griess reaction. Im this reaction the sample containing nitrate is reacted with sulfanilimide
A student determines that a 5.869g sample of solid displaces 1.75 mL of water in a graduated cylinder. Another student measures a 7.254g sample of the same metal. What volume of water should the second sample displace
Every measurement has a measurement uncertainty. Discuss how precise and accurate measurement can be achieved in spite of the inherent measurement uncertainty.
An environmental chemist sampling industrial exhaust gases from a coal-burning plant collects a CO2-SO2-H2O mixture in a 21-L steel tank until the pressure reaches 850 torr at 45oC.
a sample of propane c3h8 is placed in a closed vessel together with an amount of o2 that is 2.50 times the amount
2.00 l of h2 at a pressure of 368 torr and 1.00 l of n2 at an unknown pressure. if the total pressure in the flasks is
An enzyme-catalyzed reaction produces a product that has a maximum absorbance at 412 nm. The extinction coefficient is 4000 M-1 cm-1. A 10/1 dilution of the enzyme is made and 20 mL of the dilution are put into a cuvette with 80 mL of water and 1...
How much potassium oxalate can be added to 158.0 mL of 0.35 M [Cu(NH3)4]Cl2 before a precipitate of CuC2O4 begins to form?
A 3.00g lead weight, initially at 10.8°C, is submerged in 7.77g of water at 52.9°C in an insulated container. What is the final temperature of both substances at thermal equilibrium
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