Problem_Set_3_Key - Chemistry 2070 Assignment 3 Due:...

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Unformatted text preview: Chemistry 2070 Assignment 3 Due: Friday, September 26 @2:00pm Name _ _. Lab TA Lab Day/Time 'ceP blems. h ter 8: 2 5 27 2 47 l . l. The black-body spectrum in Figure 8-1 I of your text is peaked at kp=(2.899 x 10'3)l(t+273.15), with tin °C and AP in m. Determine the frequency in Hz at 7c, and identify the region of the electromagnetic spectrum (cg. y-ray) for: (a) The walls of Baker 200 with temperature 72 °F; (b) Graphite at its melting point of 3675 °C. (c) A microwave oven uses radiation of 2.45 GHz. At what temperature in °C would AP corre5pond to this frequency? VP 7- (/3? = (’Q.‘t't~2>no')lt:+ 1M.IS‘1/’2.ta1xlo"3 H2: («0 a 12's, 4; = (ea-sauna = 1LL1°L WV :- Z.°t‘iwxiu"(21$.3a-) humuwfi HI: = i3.lxloqu-‘ -3 _ l‘l C9] 7,: (2.4113xlov)($fi‘i?)/1.Y‘\1xlo H3: *‘H-lxlo H1] (5] ‘E +233.l§ : 2.3‘1'1Klo"3/7.‘o -= LLV‘HMJJ VIP/6A "7‘ t : (2.371Klo‘1)(2-W§Klofi) ___ : _Z;3. I! C- ‘ vt3bC‘fl‘vK 3.1139(108 «\JA‘Kkur‘ai inifirel (set we; 84 ) 2. Irradiating a silver surface with light of wavelength 230 nm causes electrons to be ejected with kinetic energy 77.67 kJ mol". (a) Determine the threshold frequency v0 for silver. (b) [1’ light of wavelength 300 nm shines on a silver surface. will electrons be e'ected? Justif our answer. (at) k :- .C-__ -- L : 2.1197“: ms" 3-? £403....V‘ Vt, ..._._____._,_., — __L.————._.._—-.——-—--———""'" )t ‘6 inqulo‘} M (Lozleot’nJ‘){LLLLMSH:5 S} =K|.11x10'$ He 2 [19.) V :: C/_> = ZA-t‘sxlogms“ =\fi.°l‘1>£lom HE 3.003(6)“; M «a. 5m; lye/OZ, no 6' Wm Ls {seaw- - 9 EM“ Ei 1' ‘LE. - 1L2. :«JunoH3s3(?..‘i‘lulohs"\(-§'——-—7' I )1. ‘1.mio'm _, a = l HXIO w 5 HflCxlE‘”) ~13 A 2 «H 1‘?» 2 Z.l:}‘iKlo (1—3;); 1 “1.1 “1‘: l‘---- ‘2 Q. i n: m “w 2 (91 In '7 {2H 1H1" : Min'.mu\-1 {AIL-t3); +c iflufie Lruw Isl-«k v1_ tin I; 2' Rid/xi 2 (maxiu‘wj/ti :IS‘delo ’3'] Tn “4.1” / lg‘l'l (6'6 2‘2‘,“{Q‘ZJVWJ‘JW :- LTM.\_J labo’j' 4. The lowest frequency radiation absorbed by an ion with one electron in its ground state is 6.17 )1th16 Hz. (a) What ion is this? (b) What is the next lowest frequency radiation absorbed by this ion in its ground (IQ Lewes» garrisan ’rrcwxs'i‘aam (Tm hail is 4m nzl. state? J '2: (""th ‘11? (—31“ lay-Luanda *0“- ‘- _—; L.v 4 =3. Lazcxrs~3“3‘s)£c.nxio“‘s-‘3 425,0 [ 2 (7233‘? 3“ Z. lfl-‘ifilbdr T g2; 5a \o-fi *5 EL” NE?”- (uh-‘95)? (‘V‘QIwQACy MAJKKM t.) “2‘ +0 in: 3 . ___ A L -; (25‘? .5. 2.19m?“ "‘5 v 2 SLR!" 3" u (cl) ( C-L‘LL xgo‘gH 5.5 3(1.’Sl><lo“ Hz. ...
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This note was uploaded on 11/06/2010 for the course CHEM 2070 at Cornell University (Engineering School).

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Problem_Set_3_Key - Chemistry 2070 Assignment 3 Due:...

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