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Q3key - C101 Quiz 3 Spring 2009 Wed Using a#2 pencil darken...

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Unformatted text preview: C101 Quiz 3 Spring 2009 Wed Using a #2 pencil, darken the balloon on the answer sheet corresponding to the best answer. iD,T/'.,XFJ'".,r = l)_,T/'_,XT_, PT/ 2 flRT R = 0.082? L rzmemm’ ‘K 7 arm 2 760 for?“ Benzene: Heat of fusion is '128Jg’g Heat ofvaporization is 395Jg’g q — mCAT Chmm: — 'l.?:1.9_j,f'g°C . . P . I, .. . 61. A sample of gas trapped in a svringe has a pressure of 2.00 aim when the volume is 25.0 mL. What is the volume if the pressure is 2.50’51tm? Zr 89} ’13.“: mTfiwL @200 mL b. 31.3 mL c. 50.0 mL d. 10.0 mL e. 12.5 mL {(3, a g (I: :. (W EL Lag-h.) V3, " will. 62. What is the pressure when 12.0 moles of neon gas at 90.0 K has a volume of 6.0 L? a. 3.69 atm @418 atm c. 88.? atm d. 548 atm e. 6.7’6 x 10‘2 atm Pdangq’ P,fl£§_‘1’_fi_$ szfiza.932_m“XWK-J 7; ”jam 5.: 63. Which will have dipole—dipole intermolecular forces acting between molecules in a sample of the gas? a. methane, CH, #9 0 ). (2'1 ()1‘0 orm . .4 #9 Q 1 11 f ,(“HCl_,-gr bcflfabfv==§ what/M’e [c c. hvdrogen chloride, PICl 1710 ‘andc e. all of the above 64. How much heat is needed to vaporize 15.0 g of liquid benzene, at its boiling point of 801°C, to form benzene vapor? a. 8.53] iii—"7;“ Q 5P, a” «by. Mega 1" 262] Mai-3M 2.: Au!— ”234344 c.1920] d. 2101] (’50))(3753/3) .. (92!: .5930] 65. What mass of sodium fluoride, NaF, is needed to prepare 250 mL ofa solution that is 3.0 % va? a. 83g @75g c. 1.3g d. 3.15;; e. 0.18;; éfie‘fl LICOmLX 3., r. 7 g i M v 1 m J /ame 66. How much heat is produced when 0.050 moles of potassium bromide are formed in this reaction? 2 K (s) + Br2 (1;) —> 2 KBr (s) AH : —188.4 kcal m ’3’ a. 9.4 kcal b. 3.? kcal c. 0.26 kcal @1.7’ kcal e. 94 kcal 2.1L + 8.1; --—-: agar + zen hut (9.050MM{W ‘-=~ 9.71 but C101 Quiz 3 Spring 2009 Th Using a #2 pencil, darken the balloon on the answer sheet corresponding to the best answer. iD,T/'.,XFJ'".,r = lid/EXT) PT/ 2 flRT R = 0.082? L wmemm’ ‘K 7 arm 2 760 for?“ Benzene: Heat of fusion is '128Jg’g Heat ofvapot'ization is 395Jg’g q — mCAT (“Almnzmm — 'l.?:1.9_j,f'g°C I 61. The pressure )n a sample of gas witfgixed volume is 40.0 torr when the temperature is 8.00 K. What is the tem e a ure when P is 50.0 t( . P M" ; £9 , , , , , , 73 IL a. 6.40 [S 0.0 [S c. 320. [S d. 400. [S e. 12.5 [S P 1 ( 75' A» I «Mar ‘9 . - . 7’25ch 62. What is the temperature when 7’.50 moles of argon gas have a pressure of 3.0 atm and the volume is 6.001;? Pub-”£7 7’»— A}; 743% (1,) a. 0.812K b. 11.11< @292K d. 45.? K e. 183K hfmdomffl ) M K- T“:- as“: 63. Which will have oan London Dispersion forces acting between molecules in a sample of the gas? @methane, CH4 : (M Pol” b. methanol, CHGOP c. ammonia, NFL, M at. ”I“. d. a and b e. b and c 64. How much heat must be removed to completer freeze 5.00 g of liquid benzene at its melting point? Note: The melting point for pure benzene is 55°C? a. 1980 J 3,3,.» 95% ML ”90:, by) @640 J ”o c. 3520] C§001‘( I237)” 690T “1,4452% - d 25.6] e 48.1 J 65. What mass of lithium fluoride, LiF, is needed to prepare 350.0 g ofa solution that is 4.00 % wa? @401; b. 3.13;; c. 140.1; d. 8?.5 g e. 1.04;; Gfiefil 5 1 (I I q ,- 'J- . 39,13,901.» .5: ._ ,9!) ”9m“ 66. How much heat is released when 0.65 moles of N0 gas decompose in this reaction? 2N0 r N7 r + 07 r Al—II—43.0l .l (.4) —> _ (.4) _ (.4) ”,3, a. 861412211 1). 661412211 c. 02ka1 d. 221431414111 2.400 ”—5 ,1); +— 0;, + 43ku{ (0.45mi moxgééifffi r. 13,72?be m C101 Quiz 3 Spring 2009 Fri Using a #2 pencil, darken the balloon on the answer sheet corresponding to the best answer. 1311/3/12 = lid/EXT) PT/ 2 flRT R = 0.082? L wmemm’ ‘K 7 arm 2 760 for?“ Benzene: Heat of fusion is '128Jg’g Heat ofvaporization is 395Jg’g q — mCAT (“Almnxmm — 'l.7=1.9_j,f'g°C : 61. A samplflgC gas trapped in a svringe llis a pressure of3.00 aim when the volume is 25.0 mL. What is the pressure if the volume is 15.0 mL. 2.» g 5‘, a. 6' V2,. a. 0.20 atm b. '20. atm c. 0.56 atm @00 atm e. 1.80 atm 8,3 fly"- 3W ”3* gm, Ar 5 5% 62. What is the volume when 3.95 moles ofkrvpton gas at 90.0 K have a pressure of 5.00 atm? @584 L 1). 0.0180 L c. 9.35 L d. 146 L e. 55.5 L 7" 5,0811% puankT 11:» ”‘2 a (55"1 Xw‘k 3.2371. 63. Which is (are) capable of hvdrogen bonding interactions? W a. methanol, CHsOH it, Md?!" ‘1 I” b. ammonia, NFL, ft} “—— c. chloroform, CHCl, ’1’, . @andb e. all of the above 64. How much heat is released when 3.00 g ofbenzene vapor condenses at its boiling point? Note: the “W boiling point for benzene is 801°C. (we! ‘3 J M d " . (191190] L§.aojj(32§;£) = ”553'” than" swim! :3 C 420'] 1134* 47 Wizm‘r'm d 672] . Slficc JCS ”*5/11. e 9.26 J ’1' 65. What mass of sodium fluoride, NaF, is needed to prepare 350 mL ofa solution that is 4.00 % va? a. 1.? g 15.725 g c. 1.1g (1.88;; '14;; 4m: ‘1; 2'15: gran . gnaw . N; ’ 66. How much heat is needed to decompose 1.2 moles of copper (H) oxide, CuO, in this reaction? 4 CuO (s) —3- 2 C1120 (s) + 02 (g) Al—I : 68.811 al .. M (.w a. 83 kcal @21 kcal c. 280 kcal d. 57’ kcal e. 17’ kcal 4cm + 6’!.9kca(-"9 ‘2on +- o,“ 0.2““! one 68'3th :— 20.6" hid yaw/Coco ...
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