final spring 2007 - g = 9 . 81 m/s 2 c = 3 10 8 m/s d water...

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Unformatted text preview: g = 9 . 81 m/s 2 c = 3 10 8 m/s d water = 1 . 00 g/mL 1 atm = 1.01325 10 5 Pa N A = 6 . 022 10 23 mol- 1 k = 1 . 381 10- 23 J/K R = 0 . 08206 L atm/mol K R = 8 . 314 J/mol K R = 62 . 36 L torr/mol K 1 L atm = 101.325 J E = h c = / = h p = h mv 1 2 mv 2 = h- T max = 1 5 c 2 c 2 = 0 . 0144 K m = R 1 n 2 1- 1 n 2 2 R = 3 . 29 10 15 Hz E n = n 2 h 2 8 mL 2 n = 1 , 2 , 3 , P = dhg PV = nRT P total = P A + P B + P C + x A = P A /P total P + a n 2 V 2 ( V- nb ) = nRT v rms = 3 RT M 1 / 2 rate of effusion (or speed) r T M U = q + w H = U + PV U = q V = C V T = nC V, m T H = q P = C P T = nC P, m T w =- P V w =- nRT U = H- P V U = H- nRT H rxn = H 1 + H 2 + H 3 + ... H rxn = X nB.E. (react)- X nB.E. (prod) H rxn = X n H f (prod)- X n H f (react) S rxn = X nS (prod)- X nS (react) G rxn = X n G f (prod)- X n G f (react) H r ( T 2 ) = H r ( T 1 ) + C P T C P = X nC P, m (prod)- X nC P, m (react) w =- nRT ln V 2 V 1 S = nR ln V 2 V 1 S = C V ln T 2 T 1 S = C P ln T 2 T 1 H vaporization 85 J/mol K d S = d q rev /T S = k ln W G = H- TS G = H- T S Kolar, Leah Final 1 Due: May 10 2007, 1:00 pm Inst: McCord 2 This print-out should have 56 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points How many electrons are in the fourth princi- pal shell ( n = 4) of a cadmium (Cd) atom? 1. 10 2. 48 3. 18 correct 4. 12 5. 9 6. 2 Explanation: Cd is in the 10 th column and second row of the transition metals. Therefore Cd has 10 4 d electrons, 2 4 s electrons, and 6 4 p electrons for a total of 18 n = 4 electrons. 002 (part 1 of 1) 10 points The molecular shape of SF- 5 is 1. square pyramidal. correct 2. trigonal bipyramidal. 3. tetrahedral. 4. octahedral. 5. square planar. Explanation: 003 (part 1 of 1) 10 points Which of the following valence-shell config- urations 4 s 4 p I) II) III) IV) is/are possible for a neutral atom for an ele- ment? 1. IV only 2. None of the configurations 3. II only 4. I only correct 5. More than one of the configurations 6. III only Explanation: The atom with a 4 s 2 4 p 2 valence-shell con- figuration is germanium (Ge). The ground- state configuration is given by The other configurations represent excited states. 004 (part 1 of 1) 10 points A molecule has two lone non-bonded pairs of electrons on the central atom and four atoms bonded to the central atom. What is its molecular shape and its hybridization?...
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final spring 2007 - g = 9 . 81 m/s 2 c = 3 10 8 m/s d water...

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