Exam2 Fall2012 - BE 1300 Exam 2 11:45-1:10 PM NAME_AccessID...

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BE 1300 Exam 2, October 18, 2012, 11:45-1:10 PM 1 NAME ____________________ AccessID# _______________ Quiz Section (Time, Day, and TA's name): ______________________________________________ CLOSED BOOK/CLOSED NOTES/CELL PHONES OFF: Nothing except this exam, your calculator (devoid of programmed equations) and a pen may be on your desk or in your line-of-sight at any time. Do not use pencils. Any scratch work may be done on the reverse sides of this exam. However, credit for anything on the reverse side of the exam will not be given unless you specifically mention that the problem is continued on the back of the page. College policy states that anyone giving or receiving information during an exam will be given an immediate failing grade for the course. I understand and agree to abide by the above rules. SIGNATURE: ___________________________________ NO EXAM WILL BE GRADED WITHOUT A SIGNATURE. DO NOT PRINT. Scores: For use of graders only Problem One _______ Problem Two _______ Problem Three _______ Problem Four _______ Problem Five _______ Problem Six _______ TOTAL___________________
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BE 1300 Exam 2, October 18, 2012, 11:45-1:10 PM 2 You may need the some of following information and formulas: k = 8.62 10 -5 eV /(atom K). k = 1.38 10 -23 J /(atom K). N A = 6.023 10 23 atoms/mol. a = 2 3/2 R for FCC unit cell. a = 4 R /3 1/2 for BCC unit cell. Atomic Packing Factor APF = V Sphere / V Cell . = N A / N A R = 8.314 J/mol-K. N v (number of vacancies) = N (number of total lattice sites) exp( Q v / kT ). Fick’s first law: dx dC D J . Special case of Fick’s second law: Dt x erf C C C C s x 2 1 0 0 .
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  • Fick, Molar mass distribution

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