Chemistry, 08.05.2021 18:30 he0gaubong
A 464.8 ng sample of an unknown radioactive substance was placed in storage and its mass measured periodically. After 47 days the amount of radioactive substance had decreased to 58.10 ng. How many half‑lives of the unknown radioactive substance have occurred?
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A 464.8 ng sample of an unknown radioactive substance was placed in storage and its mass measured pe...
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