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UT CH 302 - Periodic Table of the Elements
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Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb LuTh Pa U Np Pu Am Cm Bk Cf Es Fm Md No LrHeBe B C N O F NeMg Al Si P S Cl ArCa Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br KrSr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I XeBa La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At RnRa Ac Rf Db Sg Bh Hs MtHLiNaKRbCsFr1 23 4 5 6 7 8 9 1011 12 13 14 15 16 17 1819 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3637 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 5455 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 8687 88 89 104 105 106 107 108 10958 59 60 61 62 63 64 65 66 67 68 69 70 7190 91 92 93 94 95 96 97 98 99 100 101 102 1034.00269.0122 10.811 12.011 14.0067 15.9994 18.9984 20.179724.3050 26.9815 28.0855 30.9738 32.066 35.4527 39.94840.078 44.9559 47.88 50.9415 51.9961 54.9380 55.847 58.9332 58.69 63.546 65.39 69.723 72.61 74.9216 78.96 79.904 83.8087.62 88.9059 91.224 92.9064 95.94 (98) 101.07 102.9055 106.42 107.8682 112.411 114.82 118.710 121.75 127.60 126.9045 131.39137.327 138.9055 178.49 180.9479 183.85 186.207 190.2 192.22 195.08 196.9665 200.59 204.3833 207.2 208.9804 (209) (210) (222)(226) (227) (261) (262) (263) (262) (265) (266)140.115 140.9076 144.24 (145) 150.36 151.965 157.25 158.9253 162.50 164.9303 167.26 168.9342 173.04 174.967232.0381 231.0359 238.0289 (237) (244) (243) (247) (247) (251) (252) (257) (258) (259) (260)1.00796.94122.989839.098385.4678132.9054(223)182 13 14 15 16 173 4 5 6 7 8 9 10 11 12Periodic Table of the Elements8A2A 3A 4A 5A 6A 7A3B 4B 5B 6B 7B 8B 1B 2B1A1Create assignment, 52120, Quiz 1, Jan 23 at 10:38 am 2This print-out should have 8 questions.Multiple-choice questions may continue onthe next column or page – find all choicesbefore answering. The due time is Centraltime.DAL 0301 0215:11, general, multiple choice, < 1 min, fixed.001Which of the statements below concerningthermodynamic sign convention is NOT true:1. w is positive when work is done by thesystem. correct2. ∆G is negative when a reaction is spon-taneous.3. Work is done on the system when ∆V isnegative.4. ∆S is positive when there is increasingdisorder.5. ∆H is negative when heat is released tothe surroundings.Explanation:w is positive only when work is done ON thesystem, not BY the system. When the systemdoes work, volume increases or the number ofmoles increases (∆V > 0, ∆n > 0).w = −P ∆V = −∆n R Tand will therefore be negative when ∆V or∆n is positive.Mlib 64 508615:12, general, multiple choice, > 1 min, fixed.002A friend states that water freezing is a viola-tion of the second law of thermodynamics.Your best reply would be that1. although the entropy of the water de-creases the entropy of the universe increased.correct2. the second law does not apply to water.3. the second law does not apply at 0◦C.4. you must be thinking of the first law.Explanation:The Second Law of Thermodynamics saysthat in spontaneous changes, the universetends toward a state of greater disorder.ChemPrin3e 07 5415:13, basic, numeric, < 1 min, wording-variable.003Which of the compoundsI) N2H4(`);II) C6H12(`) (cyclohexane);III) CuO(s);IV) PCl3(g);is/are stable with respect to decompositioninto their elements under standard conditionsat 25◦C?∆H◦f∆S◦m∆G◦f¡kJmol¢ ¡JK·mol¢ ¡kJmol¢CuO(s) −157.3 42.63 −129.7C6H12(`) −156.4 26.7 204.4PCl3(g) −287.0 311.78 −267.8N2H4(`) 50.63 121.21 149.341. III and IV only correct2. I, III and IV only3. II only4. I and II only5. II and III only6. I, II and III only7. II, III, and IV only8. III only9. Another combination10. Cannot be determinedExplanation:Create assignment, 52120, Quiz 1, Jan 23 at 10:38 am 3Examine the standard free energies of for-mation of the compounds.Compounds with a negative free energy offormation are stable, whereas those with apositive free energy are unstable with respectto the elements that compose them. Accord-ingly, only CuO(s) and PCl3(g) are thermody-namically stable while C6H12(`) and N2H4(`)are unstable.ChemPrin3e T07 0115:13, basic, multiple choice, < 1 min, fixed.004Calculate the change in entropy of a large pailof water after 200 J of energy is reversiblytransferred to the water at 20◦C.1. − 0.733 J · K−12. +0.683 J · K−1correct3. − 0.683 J · K−14. +0.733 J · K−15. − 200 J · K−1Explanation:ChemPrin3e T07 0915:13, general, multiple choice, < 1 min, fixed.005Calculate the normal boiling point of chloro-form given that the standard entropy and en-thalpy of vaporization of chloroform is +93.7J/K/mol and 31.4 kJ/mol, respectively.1. 335 K correct2. 215 K3. 375 K4. 405 K5. 450 KExplanation:ChemPrin3e T07 4415:15, general, multiple choice, < 1 min, fixed.006For the reaction2 SO3(g) → 2 SO2(g) + O2(g)∆H◦r= +198 kJ·mol−1at 298 K.Which statement is true for this reaction?1. The reaction is driven by the enthalpy.2. The reaction will not be spontaneous atlow temperatures.3. ∆G◦rwill be negative at high tempera-tures. correct4. The reaction will not be spontaneous atany temperature.5. ∆G◦rwill be positive at high tempera-tures.Explanation:DAL 0301 1315:14, general, multiple choice, < 1 min, fixed.007Consider the following reaction:CO(g) + Cl2(g) → COCl2(g)Species ∆H0fS0kJ/mol J/mol·KCO −110.5 197.6Cl20.0 223.0COCl2−223.0 289.2Calculate ∆G0for the reactions at 298 K.1. −73.34 kJ/mol correct2. 221.1 kJ/mol3. −7.3 J/mol4. −500.0 kJ/molExplanation:Create assignment, 52120, Quiz 1, Jan 23 at 10:38 am 4ChemPrin3e T07 4215:13, basic, multiple choice, < 1 min, fixed.008The entropy of fusion of water is +22.0 J·K−1·mol−1and the enthalpy of fusion of wa-ter is +6.01 kJ·mol−1at 0◦C.What is ∆Stotalfor the melting of ice at0◦C?1. − 6010 J ·K−1·mol−12. 0 correct3. − 22.0 J· K−1·mol−14. +6010 J· K−1·mol−15. +22.0 J·


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UT CH 302 - Periodic Table of the Elements

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