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Nuclear Chemistry Questions - All Grades

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College Nuclear Chemistry
Which of the following equations correctly relates the nuclear binding energy to the mass defect?
  1. E=mc2
  2. ∆E=m∆c2
  3. ∆E=∆m∆c2
  4. ∆E=∆mc2
College Nuclear Chemistry
Which of the following units is equivalent to 1 joule of energy?
  1. amu•ms2
  2. amu•s2m
  3. kg•ms2
  4. s2•mkg
College Nuclear Chemistry
What is the value of k, assuming that 68 g of a 120-gram sample remains after 20 minutes?
  1. 0.28/minute
  2. 2.84/minute
  3. 28.4/minute
  4. 0.028/minute
College Nuclear Chemistry
Which of the following correctly describes the nuclear binding energy?
  1. The energy needed to keep the nucleus together
  2. The energy released when a nucleus is formed from neutrons and protons
  3. The energy released when a nucleus is broken apart
  4. (a) and (c)
College Nuclear Chemistry
What is the value of k, if 80 g of a 260-gram sample remains after 99 seconds?
  1. 119/second
  2. 0.119/second
  3. 0.0119/second
  4. None of the above
College Nuclear Chemistry
What is the value of k, if 70 g of a 167-gram sample remains after 37 years?
  1. 0.0235/year
  2. 2.35/year
  3. 23.5/year
  4. 235/year
College Nuclear Chemistry
How much of a 120-gram sample will remain after 20 seconds, assuming that k=0.05/second?
  1. 40.12 g
  2. 0.00025 g
  3. 44.15 g
  4. None of the above
College Nuclear Chemistry
What is the mass defect of S-32?
  1. 0.00 amu
  2. 0.198 amu
  3. 0.02 amu
  4. 2.00 amu
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