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Radioactive radium has a half-life

Suppose a radioactive substance decays according to the equation whererepresent the mass in grams after hours. Assume that the
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2. asked by blue
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please help me with this chemistry problem.Half-Life A radium-226 sample initially contains 0.112 mol. How much radium-226 is
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2. asked by shylo
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In 1976 a research hospital bought half a gram of radium for cancer research. Assuming the hospital is still exists, how much of
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2. asked by Kate
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In 1976 a research hospital bought half a gram of radium for cancer research. Assuming the hospital is still exists, how much of
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2. asked by Kate
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Radioactive radium () has a half-life of 1599 years. What percent of a given amount will remain after years?
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2. asked by Pamela
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Radioactive radium has a half-life of approximately 1599 years. What percent of a given amount remains after 100 years?
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2. asked by rachel
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Radioactive radium has a half-life of approximately 1599 years. What percent of a given amount remains after 100 years?
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2. asked by rachel
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Radium has a half-life of 1620 years and decays into radon, which has a half-life of 3.82 days. A 10-gm source of radium is
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2. asked by Nivia
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Radium-223 has a half-life of 11.4 days.Approximately how long would it take for the activity of a sample of Radium-223 to
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2. asked by Michelle
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A radium-226 sample initially contains 0.112mol. How much radium-226 is left in the sample after 6400 years. The half-life of
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2. asked by Gaby
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