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The half-life of radium-223 is approximately 11.43 days. Step 3 of 3: How much of an 8 gram sample of radium-223 would remain after

The half-life of radium-223 is approximately 11.43 days. Step 3 of 3: How much of an 8 gram sample of radium-223 would remain after 9 days? Round to three decimal places. Answer

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