Radium - 226 has a half-life of 1600 years. Suppose we have a 300 g sample. A) How much of the sample remains after 200 years? B) How long will it take for the sample to reach 50g? O A) 105.61 g B) Approximately 619 years OA) 288.1 g B) Approximately 3,500 years A) 275.1 g B) Approximately 4, 136 years.
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