very unstable francium-221 is produced. Giver f-life of francium-221 is only 5.00 minutes, if th mass of francium-221 in a sample is 6.41 grams uch francium-221 (in grams) will remain after 7 -s?

Introductory Chemistry: A Foundation
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ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
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Chapter19: Radioactivity And Nuclear Energy
Section: Chapter Questions
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(Q111) In the next step of the neptunium-237 decay
series, very unstable francium-221 is produced. Given
the half-life of francium-221 is only 5.00 minutes, if the
initial mass of francium-221 in a sample is 6.41 grams,
how much francium-221 (in grams) will remain after 7.15
minutes?
Transcribed Image Text:(Q111) In the next step of the neptunium-237 decay series, very unstable francium-221 is produced. Given the half-life of francium-221 is only 5.00 minutes, if the initial mass of francium-221 in a sample is 6.41 grams, how much francium-221 (in grams) will remain after 7.15 minutes?
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