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Parallel Exercises A
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Note:  You will need the table of atomic weights inside the back cover of the Physical Science 6e textbook.
  1. Give the number of protons and the number of neutrons in the nucleus of each of the following isotopes:
    (a) cobalt-60
    (b) potassium-40
    (c) neon-24
    (d) lead-208
    Click here to see the answer (7.0K)

  2. Write the nuclear symbols for each of the nuclei in exercise 1.
    Click here to see the answer (2.0K)

  3. Predict if the nuclei in exercise 1 are radioactive or stable, giving your reasoning behind each prediction.
    Click here to see the answer (20.0K)

  4. Write a nuclear equation for the decay of the following nuclei as they give off a beta particle:
    <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0072509783/121105/chap13parexa_q4.jpg','popWin', 'width=154,height=241,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (5.0K)</a>
    Click here to see the answer (8.0K)

  5. Write a nuclear equation for the decay of the following nuclei as they undergo alpha emission:
    <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0072509783/121105/chap13parexa_q5.jpg','popWin', 'width=154,height=241,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>
    Click here to see the answer (8.0K)

  6. The half-life of iodine-131 is 8 days. How much of a 1.0 oz sample of iodine-131 will remain after 32 days?
    Click here to see the answer (14.0K)






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