Online Assignment 3

Online Assignment 3 - Maple T.A. - Gradebook CHEM 212 DE,...

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CHEM 212 DE, Fall 2008 : Gradebook System Homepage » Class Homepage » Student Details » Student Assignment Details Welcome Steve Lee-chem212-F08 [ My Profile ] Maple T.A. - Gradebook http://mapleta-mef.math.uwaterloo.ca:8081/mapleta/gradebook/gradebook.do (1 of 9) [05/12/2008 4:01:01 AM] Gradebook Help Logout Assignment detail for Steve Lee-chem212-F08 in On-line Assgt. 3 (Module 3): Steve Lee-chem212-F08 Login: ssilee Email: [email protected] ca Student ID: 20227515 Assignments completed: 5 Assignments active: 0 Question Grade 1 Apply the particle-in-a-box model to the electrons in the molecule below. H 2 C(CH) 16 CH 2 What wave length of light is required to cause a transition from the ground state to the first excited state? Assume that the electrons are confined to a one-dimensional box of length L, where L is given by the expression below. L = (9 r C=C + 9 r C-C ) sin(120) In the expression above, r C=C = 135 pm and r c-c = 154 pm. Enter your answer with three significant figures. Enter 1.23x10 -12 as 1.23e-12. Your Answer: 8.81E-7 m Instructors Comment: 1.0 2 If the electron in a hydrogen atom undergoes a transition from an n = 7 level to an n = 3 level, what is the wavelength of the radiation emitted? Give your answer accurate to three significant figures . Your Answer: 1.01E-6 m Instructors Comment: 1.0
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Maple T.A. - Gradebook 3 Suppose that a particular sample of H atoms has almost all of the atoms in the n=6 state. Photons emitted from the sample are used a light source to dislodge electrons from the surface of Cs(s). What is the minimum de Broglie wave length of an ejected electron? The work function for Cs(s) is 3.43x10 -19 J. (Enter your answer with three significant figures.) The mass of an electron is 9.109x10 -31 kg. Your Answer: 8.59E-10 m Instructors Comment: 0.0 4 Your answer: Your response The radial probability distribution for an orbital in the n = 4 shell is shown below. What type of orbital is it? The orbital is a 4f orbital. (Enter 4s, 4p, 4d, or 4f.) Instructors Comment: 1.0 http://mapleta-mef.math.uwaterloo.ca:8081/mapleta/gradebook/gradebook.do (2 of 9) [05/12/2008 4:01:01 AM]
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Maple T.A. - Gradebook 5 Your answer: Your response Consider the 6h orbital of a hydrogen atom. 1.
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This note was uploaded on 07/31/2011 for the course CHEM 212 taught by Professor Not sure during the Spring '09 term at Waterloo.

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Online Assignment 3 - Maple T.A. - Gradebook CHEM 212 DE,...

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