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1.a.
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1.b.
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The half-life of 45K is 18 minutes. If you have a sample containing 4.5 x 103 micrograms (ug) of this isotope at noon, how many micrograms will remain at 3 o'clock in the afternoon? 19 45K μg 19 Submit Show Tutor Steps
29 Bi is a radioactive nuclide of the element bismuth with a half-life of 19.7 minutes. 83 What percentage of a stored sample of this isotope would be lost due to radioactive decay in a 603 second period? %
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