Exam_2 - HOUR EXAM II /Version A CHEN 1211 Profs. George...

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HOUR EXAM II /Version A CHEN 1211 Thursday, October 21, 2010 Profs. George & Bowman 7:45PM to 8:45PM Answer all questions on the scantron answer sheet by filling in the proper bubble with a number 2 pencil. If you change your answer, please erase the undesired mark thoroughly. Be sure to fill in the boxes for your student number, name and lab section; then fill in the corresponding bubbles beneath them correctly. A summary of the various molecular shapes is given on page 7. A periodic table with atomic numbers and masses is attached to the back of this exam. There are 6 exam pages and 14 questions. The last question asks for the version of your exam. Check to be sure you have answered all the questions. Please note the point values of each question. Useful Information: Avogadro's Number = 6.022 x 10 23 mol -1 1 J = 1 kg m 2 /s 2 1 amu = 1.6605 x 10 -24 g 1 atm = 101,325 Pa 1 Pa = 1 N/m 2 1 N = 1 kg m/s 2 Planck's Constant, h= 6.63 x 10 -34 Js c = OQ = 3 x 10 8 m/s E = h Q 1/ O = R[1/m 2 - 1/n 2 ] n>m R= 1.097 x 10 -2 nm -1 1 L = 1000 cm 3 1 atm L = 101 J R = 0.082 Latm/(mol K) PV = nRT ' E = q + w = q –P ' V ' H = q P = ' E + P ' V (at constant pressure) ' H rxt = ¦ (Bonds Broken) – ¦ (Bonds Formed) ' H rxt = ¦ (Product Heats of Formation) - ¦ (Reactant Heats of Formation)
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Exam_2 - HOUR EXAM II /Version A CHEN 1211 Profs. George...

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