CHEM 471 Midterm: CHEM 471 UMass Amherst Exam6 KEY 2010
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Name:_________key_____________: let"s see how well the solution to the one-dimensional particle in a box schr dinger equation explains the absorption spectrum of a linear conjugated molecule, beta-carotene. The 22 pi electrons (11 double bonds) in this molecule are delocalized over the conjugated system. Label the energy levels in the energy level diagram with the energy, expressed in terms of. This will be the lowest energy electronic transition. 8ma2 = (23)(6. 626 10 34 j sec)2 (8)(9. 11 10 31 kg)(18. 3 10 10 m)2 = J 2 sec2 kg m2 = 4. 13 10 19 j: calculate the wavelength in nm of the photon of part b. E photon (6. 626 10 34 j sec)(3. 0 108 m / sec) = 480nm: sketch and give the equation for the wavefunction for the quantum number n=4. Page 2 of 2 urea + 2 h2o nh4. Name:__________ key_____________: the conversion of urea to ammonium follows the reaction.
