exam I key - Chemistry 353 — Hour Examination 1 (9/27/07)...

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Unformatted text preview: Chemistry 353 — Hour Examination 1 (9/27/07) Name: This examination consists of four problems worth a total of 200 points. As mentioned in class, any resource except for another human being can be used to solve the questions, although a. calculator and your notes Will probably be most useful. All work must be shown on the four pages supplied in this booklet; you are free to use the reverse side of each page if necessary. Please box or underline answers to all problems. Good luck to all. Gas constant in various units: cal 1 atm J m3 atm 0.082 = 8.314 _ mol K , = 82.03C mol Ix H 1.987 mol K mol K 1. (-50 points) Classify each of the following equations and statements as either true T) or false a) The second law of thermodynamics states that the entropy of a system cannot decrease. l—a b) The mass of a hydrogen molecule is somewhat different than twice the mass of a hydrogen atom. c) The energy of a system is always less than its enthalpy. .7ra d) If the volume of an ideal gas is doubled at constant temperature. then its pressure decreases by a factor of two. 7,, e) In general, the molar heat capacity of a metal is larger than that of a gas. [0 S-V/AUU 27L} (4 +17 [’917L “7 “9/3”” /977_ “a” “9% “7707 “z /?-7;79:I]L w “W C39,011 A‘qm .10 Kq 1“ [JGIQESJOABI 199,121 smoq seaqu pauadoal Han ptre unqs SI 100p 9119, amp, aqu, uaemqaq 19298.1} 91p, apysm smooo 113m sseomd mp 31 'sean) 9:); pauuog—A‘Hn} ueaqus suymuoo M011 {{amm “(9.11 30; mp, saAouIaJ sq ‘.I€Dfl,’8[ smoq 99ml 1192991} am 111 3,; 399931 pm), ‘Jaqem qnm X211 9:); In; Sm} maplus P. ‘qud B .10} mom-Bmdald III (Slmod 9.3 ‘q) LO .m/ <17"? 5’5 7’7 = [‘7 8!???” .1 h..- Oofflfljwfilf ’5 :. (xii/my) ,A I V 1 9“)»7431“ ~ = Afaf~ =— Afwdvfw :M A 3A 'Ssaomd sun 10} [1V pm), m 99121113193 ’1 g 310 eIImIOA [Bug 1?, 01 1 ()1 go 911111101X [121mm HP, mm; )1 00g one KHEIIIIGIflOSI pue KIQISJBAGJ pessaxdmoz) am 3133 map; HP, 30 3910111 oml (slugod 09) ‘g m, _, fiA 27 I ; __, d ’ “47‘ ft 6’ , a ,..d I kl I ‘ 9 ‘d ")flfij o J7/‘I'F—= V 1 1" ' NC “1+” ? 8 PI = 1/05; =(’A~".A)*"‘i;~ 4c! 37.$"‘€=7:T—LLU :14” 1..le my Ivr ' i £71506 :' 30565 E1001 4— 2105/ 1‘ 'SSSDOld sun 10} HV puma m ‘b ammoma OSIV '98.? 9113 go GIHSSQId {Emmy 91p, auguueqap “)1 001+ 91 ssaoold 8qu H; 9311qu almmadma; aqq 51 'pé)A9U{I)‘B s; umuqmuba [Bonmqmm mun selequoume g Jto amssald [BUISQXB paxg “[3 go uogqeaqdde Kq A1121);qu —;pe passaldtuoo s; )1 Dog 3,2 Knemuy map; ()HIIOQBIIOIII go 910m auO slugod 09) ‘v W ...
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This note was uploaded on 05/10/2008 for the course CH 354 taught by Professor Stanton during the Spring '08 term at University of Texas at Austin.

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exam I key - Chemistry 353 — Hour Examination 1 (9/27/07)...

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