Worksheet #4 - CHEM 124-01 Fall 2006 Dr Berber Chapter 7...

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Unformatted text preview: CHEM 124-01 Fall 2006 Dr. Berber Chapter 7 Worksheet 4 This worksheet is based on material covered in Chapter 7 of Silberherg’s. Work also on the problems assigned and examples of this chapter. ® The wavelength of an x-ray is 1.00 x10 '9 m or 1 nm, what is the frequency of this x-ray? 30011105 «1 “V : [£me 7 3-100x13fl iii. in: s") 7.. I If the wavelength oflongwwavelength electromagnetic radiation is 7.65 X 104 In what is the frequency of this long—wavelength radiation used to contact submerged nuclear submarines at sea? _ __(;__I 3.03).!03'“ (a‘ 21/ T: 2 V: YSS‘I‘O‘h- “39260 H1, (Of?) 3 X What is the energy of a photon of electrornagnetic radiation being emitted by radio station KBSG 97. 3 FM ( 97 3 x 108 cycles/sec)? l h: "3'1 = 11 (NE 3.40“; 6 am 3‘- E V V — (qu san“‘5*1 1657.61xt0 343. s) E. Hfixio‘atl'l LIL ® What IS the energy of a gamma ray emitted by C513 7'if1t has a frequency of 1.60111020/5? L Nil, £626 W 'a‘lajs v: I .§(;Iul.’.1w:1"'i ‘ E V E a an» is amw 5 I. What is the energy of a photon of electromagnetic radiation that; is used in microwave ovens to cook things by rotating water molecules, the wavelength of the radiation is 122 mm. 3.519 h-6616n15“Js E (W. lttsaowa'l (.2 3. allow: a: 111nm" O lllm. mam) tier” 6 I. a) Calculate the energy of a light of wavelength 4.50 x 102 nmE‘ '16: q.smo"7m b) Calculate the frequency of the same light 0 3 mm 9.]; Pl -1 'V'H-r 4—7—1551“ch Hurlle b) Predict the color: 1 . H50 ”5 67‘ _ $50..» :2 lake. 7 (1’ a) When a cesium salt IS heated in a flame, a photon of light with an energy of 4. 3 x 10‘19] is emitted. What color would be expected for the cesium flame? 5% (6-616 1:1 “355)(3 vandals) E-qsafl‘“? it 3:110' 5““ a a J .. .41; , (6.525110% 50311100] - g 616:.” 3'5 1 - i; 3 01.13 M"; 2 9.3:.“ d = 4.6m n ...
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