Quiz 7 key - Chem 1B July 28, 2010 Name Show all” work....

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Unformatted text preview: Chem 1B July 28, 2010 Name Show all” work. mass of proton =_1.007825 amu; mass of neutron -= 1.008665 amu; 1 kg = 6.022 x 1ozfiamu; 1 J = 1 (kg-mzys2 1 . Select the nuclide that completes the following nuclear reaction: 54Cu 9 . c + ? ' a“ 63Zn b_ 63Ni 64211 e_ 63Cu 2. What is the total binding energy of 12C? [12C atomic mass = 12.000 amu] f a fit fl “"1 “a % J: g . .1'I _ 31.3. “r ' u I _ “m m .4..-_-.-... . \ {Z Fries" " " . ""' .;~- I}? ‘1.» w .3 “ii i 5?” s” “'7. '12 / x— 3 o 4w 1 a 1.30 X J t. :1 E i “h “+5 I {02 ' L43 7" 10' J ' ,, . . “12 ..— :11 {ml if”. m; s I 15 i _ #3.“... -...'.‘i' "if d. 3.91 x 10 J .. as. 5 _ {is c \ sw- . all on. Of 59%? it 5i“ MW. 96" a J “l5 a! “Va H a {no WMH “hm-.m- m E -.<....~-.-.-.. ._ _ .._.:.t........:..=..- " " f Infiel- d... WEE F “Paw "an g I £143 of E?” a” iii if .7) i} W 1 if? 1 $1.31 as a} “*- m 59* x r - + is £11: a w {E i ii :34» f It s I f g...“ . t; i ., iii a: f {:2 3. What is the specific activity, in Ci/g, of an isotope if 4.56 mg of the isotope emits 2.27 X 108 [3 particles per second? [1 Ci = 3.7 X 1010 disintegrations/secondj a, 4.97 Ci/ g C; Q is 3%.. x e; L? b, 0.135 Ci/ g g “ __ if. . x 10'3 Ci/ g . 5 Ci/ g ' "Chem 13 Quiz 7 July 23, 2010 4. What is a major difference between nuclear fission and nuclear fusion? Nuclear fission uses electrons to break nuclei, while nuclear quiOIl uses neutrons to break nuclei. ' I " " -. a Nuclear fission uses neutrons to break nuclei, while nuclear fusion adjoins two nuclei. . Nuclear fission reactors are not commercially available, while nuclear fusion reactors are. (1, None of the above 5. What are magic numbers with reference to nuclear stability? 3, The number of nuclear particles of elements not located in the belt of stability b. The number of nuclear particles of radioactive elements d I_ The number of nuclear particles in generally more stable nuclei , None of the above 6. What fraction of radioactive atoms remains in a sample after three half-lives? "I a" i 'I _ Io“... I I: .. 1/8 .- I £3 i? _ a“? I I d. 1/16 e_ 1/32 ...
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Quiz 7 key - Chem 1B July 28, 2010 Name Show all” work....

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