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A Radioactive material has a half-life of 18.4 days. After 55.2 days, there were 177 mg of the material. What mass of the material was originally present?
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A Radioactive material has a half-life of 18.4 days. After 55.2 days, there were 177 mg of the material. What mass of the material was originally present?

User Jake Lowen
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1416 mg or 1.416 g ...................
User Malvon
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