Another practice midterm

Another practice midterm - Chemistry 1A Fall 2003 Final...

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Page 1 Chemistry 1A, Fall 2003 Final Exam, Version A Dec 10, 2003 (180 min, closed book) KEY Name:___________________ SID:_____________________ TA Name:________________ Write your name on every page of this exam. This exam is multiple choice. Some questions have more than one correct answer. Mark all that apply. Fill in the Scantron form AND circle your answer on the exam. Each question is worth 3.89 points.
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Page 2 Potentially useful relations: 800 600 400 200 IR Visible UV Wavelength (nm) Color and Wavelength of Light compound G° (kJ / mol) CO 2 -394.36 H 2 O (g) -228.57 C 6 H 12 O 6 -910 O 2 0 G° of Formation 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(H 2 O) = 4.184J/g K 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 for aA + bB cC + dD b a d c B A D C Q ] [ ] [ ] [ ] [ = At equilibrium, Q = K G ° = - RTln K R S T R H K ° + ° = 1 ln G ° = - nF Є º pX = - log X ] [ ] [ log HA A pK pH a + = E = h ν λν = c λ deBroglie = h / p = h / mv p = mv E kin = ½ mv 2 E kin (e-) = h ν - Φ = h ν - h ν 0 = R n Z E n 2 2 PV = nRT RT E kin 2 3 = M 3RT v rms = E = q + w w = - P ext V T nR E = 2 3
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Name_________________________ Page 3 Points 1 and 2 represent the work functions in frequency units of two different metals on the plot of photo-electron kinetic energy vs. photon frequency for a photoelectric effect experiment. Use the photon frequencies labeled A, B, C and D to answer the following four questions.
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