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What fraction of a sample of gold-198 remains radioactive after 5.38 days? (1) 1/4 (2) 1/2 (3) 3/4 (4) 7/8 Please explain how you the answer?

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  • What fraction of a sample of gold-198 remains radioactive after 5.38 days? (1) 1/4 (2) 1/2 (3) 3/4 (4) 7/8 Please explain how you the answer?


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