CH304K_HW08 - hyun (hh7953) – Homework 8 – Sparks –...

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Unformatted text preview: hyun (hh7953) – Homework 8 – Sparks – (53435) 1 This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points In the famous equation E = mc 2 , 1. E : Einstein; m : matter; c : speed of light 2. E : Einstein; m : meters; c : conversion 3. E : energy; m : mass; c : characteristic of the particle 4. E : energy; m : mass; c : speed of light correct Explanation: Definition 002 10.0 points Choose the correct statement. 1. Small atoms are most likely to undergo nuclear fission. 2. Only some elements are capable of un- dergoing nuclear fission, but if an atom is fissionable, all isotopes of that atom are fis- sionable. 3. Only some elements are capable of under- going nuclear fission and only some isotopes of those elements may be fissionable. correct 4. All elements are capable of undergoing nuclear fission. Explanation: 003 10.0 points Balance the nuclear equation 236 92 U-→ 94 36 Kr + ? + 3 1 n 1. ? = 139 56 Ba correct 2. None of these 3. ? = 240 93 Rn 4. ? = 139 36 Kr 5. ? = 236 56 Ba 6. ? = 4 2 He 7. ? = 142 56 Ba Explanation: mass number: 236- 94- 3 = 139 atomic number : 92- 36- 0 = 56 236 92 U-→ 94 36 Kr + 139 56 Ba + 3 1 n...
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This note was uploaded on 01/19/2010 for the course CH 53435 taught by Professor Sparks during the Fall '09 term at University of Texas.

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CH304K_HW08 - hyun (hh7953) – Homework 8 – Sparks –...

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