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Chemistry, 28.01.2021 07:20 jessica01479

A 467.8 ng sample of unknown radioactive substance was placed in storage and its mass measured periodically after 47 days the amount of radioactive substance had decreased 58.48 ng how many half-lives of the non-radioactive substance have occurred

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A 467.8 ng sample of unknown radioactive substance was placed in storage and its mass measured perio...

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