chris quiz 6

chris quiz 6 - CHEM 6C Spring 2006 Section C08 TA: Chris...

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CHEM 6C Spring 2006 Name: _____________ KEY ____________ Section C08 TA: Chris Meier Quiz #6: Nuclear Chemistry June 7, 2006 You must show your work when needed in order to receive credit. Please read each question carefully and be sure to answer all parts. 1 amu = 1.6605 x 10 –27 kg = 931.494 MeV c = 2.998 x 10 8 m/s 1 MeV = 1.6022 x 10 –13 J 0 1 n = 1.00866490 u, 1 1 p = 1.00727647 u, - 1 0 e or +1 0 e = 5.485799 x 10 - 4 u, 1 1 H = 1.00782505 u (1) ( 3 pts) Predict all of the products (including the new nucleus and any emitted particles) of each of the following. You may simply answer by writing the nuclear equation for the reaction. (a) 5 8 B undergoes β + decay 5 8 B " +1 0 e + 4 8 Be (b) 87 221 Fr undergoes α decay 87 221 Fr " 2 4 # + 85 207 At (c) 7 15 N is collided with a proton to form 6 12 C and ___. 7 15 N + 1 1 p " 6 12 C + 2 4 He (d) 93 237 Np decays by the following series: α , β , α , α , β , α , α , α , β , α , β 93 237 Np " 7 2 4 ( ) + 4 -1 0 $ ( ) + 83 209 Bi (2) ( 2 pts) What type of decay ( α , β , or β + ) do each of the following unstable nuclei undergo? (Hint: compare these isotopes to the average isotopic mass of the element in the periodic table).
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chris quiz 6 - CHEM 6C Spring 2006 Section C08 TA: Chris...

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