How many half-lives are required to change 230.4 g of a sample of a radioactive isotope to 1.8 g over approximately 21 d
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How many half-lives are required to change 230.4 g of a sample of a radioactive isotope to 1.8 g over approximately 21 d
How many half-lives are required to change 230.4 g of a sample of a radioactive isotope to 1.8 g over approximately 21 days? half-lives. What is the approximate half-life of this isotope? days
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