shaydog8953 shaydog8953
  • 13-05-2022
  • Chemistry
contestada

Fluorine-21 has a half-life of approximately 5 seconds. what percentage of the original nuclei would remain after 15 seconds

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jsimpson11000 jsimpson11000
  • 23-05-2022

Answer:

1/8th = 12.5%

Explanation:

Three half lives would be   1/2 * 1/2 * 1/2 = 1/8 th of original

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