FINALSP07 - Chemistry 1A, Spring 2007 FINAL EXAM May 14,...

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Page 1 Chemistry 1A, Spring 2007 FINAL EXAM May 14, 2007 (3 hours, closed book) Name:__________________________ SID:____________________________ TA Name:_______________________ 1.) Write your name on every page of this exam. 2.) This exam has 80 multiple choice questions. Fill in the Scantron form AND circle your answer on the exam. 3.) There is no penalty for guessing, so answer every question. 4.) Some questions may require bubbling in more than one choice to receive credit.
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Name_________________________ Page 2 800 600 400 200 IR Red Green Blue UV Wavelength (nm) Color and Wavelength of Light G ° = H ° - T S ° H ° = Σ H ° f (products) - Σ H ° f (reactants) S ° = Σ S ° (products) - Σ S ° (reactants) G ° = Σ G ° f (products) - Σ G ° f (reactants) S = k B lnW G ° = - RTln K R S T R H K ° + ° = 1 ln G ° = - nF Є º pX = - log X ] [ ] [ log HA A pK pH a + = k t 2 ln 2 / 1 = E = h ν λν = c λ deBroglie = h / p = h / mv E kin (e-) = h ν - Φ = h ν - h ν 0 = R n Z E n 2 2 x p ~ h p = mv Particle in a box (1-D Quantum): E n = h 2 n 2 /8mL 2 ; n = 1, 2, 3. .. PV = nRT RT E kin 2 3 = M 3RT v rms = E = q + w w = - P ext V T nR E = 2 3 N 0 = 6.02214 x 10 23 mol -1 R = 2.179874 x 10 -18 J R = 3.28984 x 10 15 Hz k = 1.38066 x 10 -23 J K -1 h = 6.62608 x 10 -34 J s m e = 9.101939 x 10 -31 kg c = 2.99792 x 10 8 m s -1 Gas Constant: R = 8.31451 J K -1 mol -1 R = 8.20578 x 10 -2 L atm K -1 mol -1 T (K) = T (C) + 273.15 F = 96,485 C / mol 1 V = 1 J / C 1 nm = 10 -9 m 1 kJ = 1000 J Cp (water) = 4.184 J/g· o C
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Name_________________________ Page 3 1.) What is the empirical formula of a hydrocarbon that is composed of 20% hydrogen and 80 % carbon by weight? A) CH B) C 2 H 6 C) CH 4 D) CH 3 E) C 2 H 3 2.) A pure hydrocarbon sample was combusted in oxygen and the resultant mixture of gases analyzed using mass spectrometry. Which of the following statements about the data is false? A) All of the hydrocarbon was consumed by the combustion. B) Oxygen gas was in excess in the reaction. C) The molar mass of the hydrocarbon is 32. D) Water is a product of the reaction. E) Carbon dioxide is a product of the reaction. 3.) What is the mass (in grams) of 2.5 L of gasoline if the density of gasoline is 0.79 g/ml? A) 2.0 B) 1.98 C) 2.0·10 3 D) 1.98·10 3 E) 3.2·10 3 4.) What volume (in L) does the reaction mixture occupy after the reaction of 10 L of Cl atoms form Cl 2 at constant temperature and pressure? A) 1 B) 5 C) 10 D) 15 E) 20 18 44 32
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Name_________________________ Page 4 5.) What color does a normally blue object appear when viewed through a filter with the absorption profile shown here? A) clear
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This note was uploaded on 02/09/2010 for the course CHEM 1A taught by Professor Nitsche during the Spring '08 term at University of California, Berkeley.

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FINALSP07 - Chemistry 1A, Spring 2007 FINAL EXAM May 14,...

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