Chemistry 1A - Fall 2003 - Head-Gordon - Midterm 1

Chemistry 1A - Fall 2003 - Head-Gordon - Midterm 1 -...

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Unformatted text preview: gulp-HI. Lamar—J _." I” ..__ Sermon 1: STDICHIDHETEY I.) What is the coefficient of oxygen :in the balanced combustion reaction ol'onc [1] mole of acetone [Cgflnfl‘i'i' CtH-tfl “ID: ”I'D: + 31:3 AH a}: £13 (a? Eli For the next four questions consider a gaseous hydrocarbon I 1lllhich centaina only carbon and hydrogen. It has a relative molar maaa 2.25 times greater than molecular oxygen. The balanced eonthuation reaction of one mole ofhydrocarhonltia: 5 ml c Celia. —e |E+30145Cflg+fiflgfl ”will no, 2.]: III-i-I'hal la the molecular formula for hydrocarbon X? fl film ,CSEII-h forearm @Hla 3.} What is the minimum mass {yams} of hydleealhen it required to conrtaletclgpr react with 4.4:] g oxygen as shown {this can be determined without the prefious result]? - i x ahead 539.511 @.1 mac Etaa . lj 1 ii”, ‘tj ‘32:: I'mulalm'w l 7—H: E 9'11” 3‘- fll Ell-«In lI-Iull H11" 3 1 WEE-,3. l l 4.] .. hichiatl'uewhctt 1i] meleaofhydrncarhan-ireactndthl4.flmoleaofon}rgcn? lien} Allthecaygcttlaeuaautrrcd. ir-t-I 'X - f-Bf IFillthelug-titcrearhcutiaettlnaurlmaci. “Jr "It'll my m " 1"1‘5r'w'l x firNoreagentaremain. 1 * ,Di Anequalmaaaol'eachreagentremains. LE. 5.24;“; WH- j} None of the-an. 5-} 1|it"‘hic‘tt ia the mass spectrum for the products of the cornhualioa of hydrocarbon K? ' WW H'tfl " Am rt1 H H il- “FF I E. 'I. : tau fl... In“ I ”1"" £__CEL_.__ SW Page 3 —_—_—_—————-—'—"- Mm a, 3”?“ 15.} 1:13;; 111: mm {in slums} uHLufgaac-ljnuiftha min: 01' gasoline is {1.19 A} 12:3 .3391 13143.9. [115433 515.523 3» ".- . 0*; EL fire- l I I ‘" H= u E3 H: 4anJ‘PLul-E ml— u, I} A 54 g aampl: crf aluminum reacts mmpletcly with 43.0 g 131' HIE?" gas- ‘W'J'Iich 1's flu: funmla arm: unidc? @131. B] All? C] AID; D] 311505 E} HEIDI M Ma Mgr-11m : 1H1 :1 '- 7‘ ERR: 5‘53 [1 FM" 17% It: 3 3: he J W10; 53mm»: 2: Ammc STRUCTURE 3.] Whuisthemularmn {yum-llnfumnplc ul‘aluminum when: allthuamnul. have lfintulmns‘f' ”Pl". _.|5- A] [3 B] [5 @B D] 32 E} nune ufthese 9-} Hum many pm 31': than: in a gold {Au} nucleus?II 11F."l’1 A141] 3155 E} :31 E1131 "1": Hi} ti:flwuh-urguunabumn(fl}iunwiflflelm? I am 31-1 C} n D}! E}! “:3 .I' Fag: 4 Hut-«MW Fer the next three queetiene eenstder a In L sample of ehlerine eteme in their natural relative abundances [3:1 3'51:] : “EU. The C] atoms reeet te farm C11. {:jL} Which is the meet liker meee epeeh-um ef the prettueee? 1'"; MI‘ 0'] {INF/I 1m! 12.} What vnlume [in L] time the gas {reentry after the reentinn ufthe El aturne tn [amt e} I5 are I Cantinue with the next gunfiun'. I Wm Semen 3: Pant-Ett'rms an LIGHT Peinta l and 1 represent the werl: funetiens in fi'equettey units of two different metals. The plat is ef phete-eleetrert kinetic enermtr V5. pheten fi'equeney fer a plinth-electric effect experiment. Use the phetnn frequencies labeled A. E. C and D te answer the fellcwiiig questiena. RE. 1 1 see: _ E' leer - E, A B I C D frequency 1L “1 [4.] 1tit-PlncttIilietenejectsanelectnanwiththe greatest kinetic mflflfiflmmflal I“? m 313 :3”: eel/heme 15.} We]: phctce ejeela an electren with the greatest kinetic energy freer: metal 1‘? 16.} Which phurents]: eject elements frntn metal 1. 1 tit net metal 2 (mini: all that apply}? .253 Cl C D} D s; hehe 11'-) Which phnten[s‘_t eject element: fi‘etn metal 1. but am metal I [mark all that apply}? " h h} A at a c; c [n e s} ene ill-) 1titu'hicl't phetents} tie net eject a pheten tit-em either metal {mark all that apply]? LI @ B] B C] C D]: D E] mine -y The fi'etqueney at peint w is 11 e 1e“ He he the eietet regien efthe eieihte epeetnnn. What is wavelength et' a pheten with this frequency [in cm}? (hint: nc calmilatiett necessary} 11‘ .1” .311 . lrtfiiettr . . 3 _- misc Bllfifl C3110 miss @211} ‘4' cute-‘4 "' 1D.) The frequency at peint w is T.l e 1e" He in the vielet regim'i enhe visible spectrum. llWhat is energy nfa pheten with this tit-equate}- [in jellies}? E f he! Milefl @ets Cline-34 masets Elllelfl Eennntie with the neat meatlen'. | me his Cl: i Page 6 YLM'EWX ' i / 21.] Which is the beat demfiptl'nn nfthe eulnr nfan abject with the fiIIlnwing absupniun i sperm? . blue green yellow orange red ”a A] yellrm' B} red C] urnnge D] white E} lne 21. } ILinrisr which enndirirms rs emsu'uetive interference u a paint an the target in e twe slil experiment with waves? A When waves fium each Ilit Itrritre in-phnse. ,3; When waver frrII'n each slit arrive filfl‘ nut ufphese. ,C‘} When waves frern eneh slit de net arrive at the paint. When waves them each slit arrive It different times. Censtmefive interference is never nhsenred. SEEI'IflII-i 4: QUANTUM Museums Censider the eiestmnie energy levels or the LF‘ ierI fer the fellrrwing five quesliuns. 1 “I 1 r. 23.] What is the ground state enermr in units efits {Rydberg}? 1—1; R as . ' 1 @ B} .125 E] n n} 5 $9 :11 Ifi m Fr ._ ll 24.} What is ltIe first eIreiIeIi stare enerfli' , 3. q “I 4,— ms @25 £10 3 D15 E}? LJ. h L“. aai‘ERrJ-I") ‘11 1 e". f E. I” 1 ‘I 1": r“ '-...- 1.] t u: '.- E .1: $1? Htl\ wavelength phetnn is required to excite liIis ien frnm its greund slate In first aired state {urn}? -_' sires sum HQ}? Egls; runs ‘3: RI if?” if) _ 3 mg the V 13%“ =- r=h§l :1 a s- 31; in am] I. LCiE‘i‘J" _Cl£ (a. H - l' - a: ~IE: —“ Ti) H i p 5, ' ix -.j'“ in: His“ “5“ WYM ltltivc tn an clec'a'cnic energy level, which audition repreaenu :erm my? eleetmn and nucleus infinitely senate-ted. E: 1.1: The ground state. In } The: nucleus- 1 Fill. Hm: uf‘fl-tese. 11.]: Win: it: the inniratien energy cf Ihe inn in wits cfch'i' .11 ____..—-- A] -9 Ell-1.25 C] ‘3 D14 . Eenfinflcwifltflflmm I --:-"nn: 115.} Hew unity unique spectral cmiaaim lines are cheenred Earn a system with few equally spaced energy levels? MI fl}! @ DH EH 29.} Which excited state mclcculc er irm will have the amalicm icniaefitm cncrfl"? P M thp‘ 1' t B} Hqttlap‘fi ‘33,. _L C} Lttlslep'tfie I n" Betsizs'se't are, Bflalla'tfip 1 $1. 30-} Which is a peaaihie elecnenic cenfiguretien fer Itcuh'tfl silieen? Page 3 Per the next tltm: questions, consider particles with the fcllcwing masses [in 1:3} traveling at equal speeds: Mile-31 Ellie-2? Elfific-EE D}4.5c—19 3 I.) 1Which has m: greatest mcmcntum? A] A B] B C] C E} cmmnt be dctcn'nincd. 32-} Which has Ht: arcatcct dc Brcglic wavelength? ‘1‘: b?- . at A} H} B C} C D] D E] cannut be determined. 33.) A tum particle me: has :crn energy when cnnfined he a be: [lhc Inhvcs't energy level is not 1cm}. Hencal {classical} particles can ccrnc tn :1 rest and have eerccnergy- Hmnflncdin idmticalhcttu,which wculd have the lowest gm 1. ' I _ ‘11 E;1'LE- mtelcf zercpmnt} fF:—h:— ‘EEE‘. .3‘. ,- e c em "e“ m ‘5' a.“ 0 2-: an . 3113 CM? Elcarmcthcdctcmtined- 22" "f... 1 .31.}- V' _ I: a .- “H.151, [Eccflnncwifltthcnehtr .-.i.: 3H.) Which atcrmc crbita] has the greatest number cfredjal nudes? 'hl'tfll, Hail! '- H ”I If r'lfil-Je truth .2 Hid-ET EHJJWjI-Illflr Ir'l'fiéfi '1- Q I'l- c-a- II J A} 15 .5 cup D1341 Ell-f - 1 ;- fl “'5” I. t - cl“ Pr J l? 35.] Whicflwave funnier aplfliclctnppedinhlvdhncnsiunnlhchhasthehighest enemy? E' W A} E' hr x a) $1 r' "U ”‘M' " F“ Far The next three questinns, wider 111: following an nf five whims A 1 E- C D E “ELM“! Int-ami mics fidisplawd 1'11 whim ‘D‘? F- m, L m»? -J x AH" (g1 C12 D13 FH 1| .1..th £212.] What is th: hem iabtl far mbital 'A'T F_ D '._ . I . r: A} In 3125 (Gilly 3323: map '3‘ 33.] Which orbital has thc highcst may? D A] A B]: B @ E11:- D} E ...
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