Chapter 21 - Chemistry 11e(Brown/LeMay/Brusten/Murphy...

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Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 21: Nuclear Chemistry 21.1 Multiple-Choice and Bimodal Questions 1) What percentage of electricity generated in the U.S. is from commercial nuclear plants? A) 1% B) 10% C) 20% D) 50% E) 90% Answer: C Diff: 1 Page Ref: Ch. 21 Intro. 2) By what process does thorium-230 decay to radium-226? 3) The alpha decay of what isotope of what element produces lead-206? A) polonium-210 Answer: A Diff: 2 Page Ref: Sec. 21.1
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 21: Nuclear Chemistry 4) In balancing the nuclear reaction 238 234 4 U E He 92 90 2 + , the identity of element E is __________. 5) This reaction is an example of __________. 210 206 Po Pb _____ 84 82 +
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6) The missing product from this reaction is __________. 121 121 I Te _____ 53 52 + A) 4 He 2 B) 0 e 1 - C) 1 n 0 D) 0 e 1 E) 0 0 γ Answer: D Diff: 1 Page Ref: Sec. 21.1 7) This reaction is an example of __________. 41 41 Ca K _____ 20 19 +
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8) The missing product in this reaction would be found in which group of the periodic table? 24 0 Na e _____ 11 1 + - 9) The missing product in this reaction combines with oxygen to form a compound with the formula __________. 42 0 K e _____ 19 1 + -
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10) Radium undergoes alpha decay. The product of this reaction also undergoes alpha decay. What is the product of this second decay reaction? A) Po B) Rn C) U D) Th E) Hg Answer: A Diff: 1 Page Ref: Sec. 21.1 11) 41 Ca decays by electron capture. The product of this reaction undergoes alpha decay. What is the product of this second decay reaction? 12) What is the mass number of a neutron?
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