Chemistry, 09.12.2020 08:30 cobyontiveros

Need help A sample contains 18mg of radon-222. You estimate that this is 0.01% of the original isotope. How many half-lives have passed?

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A sample contains 18mg of radon-222. You estimate that this is 0.01% of the original is

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Need help A sample contains 18mg of radon-222. You estimate that this is 0.01% of the original isot...

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