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EEE460_Hmwk01_Solution

EEE460_Hmwk01_Solution - 5 How many neutrons and protons...

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Unformatted text preview: 5. How many neutrons and protons are there in each of the following nuclides: (a) 10B, (b) 24Na, ((3) 5900, (d) 208Pb,"and (e) 235U? . hm... / 5 Z Vin/“P “-i)‘p ‘H'r? aleflnemfiL 1.5575175 flumécw afi [areflLo/vs’; TA :3, flumégr op ryeuJ/‘on; f5 .A-Z (.4. M) ‘ (4)1110 er Z= 5 (Wm) N: /O “S: 5— 5751247045) (an) (e) u—23S : Z = ‘22 (I /\/:23‘5»‘fl [“743 ,1: ERMNariona/ (”Brand 6. What are the molecular weights of (3) H2 gas, (b) H20, and (c) HDO? (2’?) [Ba SE: C" @r) +Ll 5? VJsz I'D wan-f;- (C> it; L’k/‘f‘lfléiiyl [/74 , . .\ ‘ - A, , / a lav/pea #5 +352 an!" auflza r‘ I‘m-Lg n (,4 y (,1 r” a; #15 ’77‘7/‘8v’f7fé‘7L H a: 96);??? H—ffl (4) M [92> '= 2 M (IL/*1) = 2 {/05678425> :[22,C‘2I S55 C11) was»: a 11/1145 + xvi/11> = sac/55's; + [5, 971??“4‘ -_— //@,,(:1/ gas flwmro/ej o/e‘ 311:1” g) M (FL/JCS) = M (21—1) + M/P-2>+M/Zp5 ' 1: @07exs + now/0:2 4— as: 99991 /u = #932132"? E/SL'M‘JIQ] 9. How many atoms of 234U are there in 1 kg of natural uranium? 6‘ 022 X [02302490.443/ ~~ mo la) AV/OGO)9 (238,028? 3/8-more,g k3 Wu : g”53X/024a+om5 From Table Aft )2”??? = @0055 ai/c‘ ~ ’ _ 090055 . ,, '_ ‘3 . _ ail—23% ma:2 ” moo (2-5.3 x10 ¢fl+omg> ‘3 IQBQK [£20 V’u-nw oaJoma’ 0p U 234‘ 10. How many atoms of deuterium are there in 2 kg of water? ”#50 2‘- écéfis4x101§ mo/ecu/ex my '= 2 ngao =z(2>(6.685‘+x/02f:) .:: ["337x1026 aha/m: a? A/ new TaL/e Ad 2+ 974 : a, 0/5 2% j __ , _ €9,015 . 26 mpg-2 " Xfia nu ‘( /00 >(ln337x l0 ) . > 2—? : QOOGXIO 040,445 Uri! .2 13. A reactor is fueled with 4 kg uranium enriched to 20 atom-percent in 235U. The remainder of the fuel is 238U. The fuel has a mass density of 19.2 g/Cms. (a) What is the mass of 235U in the reactor?_(b) What are the atom densities of 235U and 238U in the fuel? MU = Vass- M235 1" 20235 M :38 . : @,;z>{:< 35” oar-39 «23> + (él 936323805075?) = 2324494: mufigasr ,2?sz (er/«ag— 0.37%ka _ aozznx 20335, 4M2?) MU 2 3’7, 4%?4/ 9/5—mo/a =7 LA 8 693 x 20"“ a+om5/Cm‘? Nag”: = 2:35 M = (092)(4,8693x/o33 1"— €7.739X [02] avlomnjflmj me; = [098)(4eé93x/o“) ~—— 4/44,-ng 3a 89.556 [022 04emy/cm‘3 14. A sample of uranium is enriched to 3.2 atom-percent in 235U with the remainder being 238U. What is the enrichment of 23"U in weight-percent? MU -: W n35- Mu-235+ {238 ML/‘~238 : (00032>{235noq_3q13>+{[—O,932>[i38.050783) _ : ‘2 37,9546 : - (0,031)1235.oa+3923 l5 b ”7235' 23219 5+4 ’09") WWW _o = 0,qu 12. Dry air at normal temperature and preSSure has a mass density of 0 0012 g/crn3 With a Hump {3an“ A“ -1: M. W-.. A1: n no um- L -_ 1 7i 1 "h of 180? ' O? n 16. A concrete with a. density of 2.35 g/crn3 has a hydrogen content of 0.0085 weight fraction. What is the atom density of hydrogen in the concrete? ( [.0079 4 3/8—5440/8 ': /aiCIX/Olj 04cmsj/cm3 : ME :Egaflé 35354-2; >/é 022x/0 3fé‘fm1 ...
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