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dietdrpepper dietdrpepper
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2 weeks ago

In the following diagrams, A represents a radioactive isotope that decays into a new isotope, X. Each circle represents 1 mmol of atoms.

t = 0:
image
t = 25.0 s:
image
What is the half-life of A?


▸ 6.25 s

▸ 18.8 s

▸ 25.0 s

▸ 50.0 s

▸ 60.2 s
Textbook 
Chemistry: Atoms First

Chemistry: Atoms First


Edition: 4th
Author:
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duankong-feiduankong-fei
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2 weeks ago
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