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Radium decays exponentially. Its half-life

Radium decays exponentially. Its half-life is 1,690 years. How long will it take for a 50-gram sample of radium to be reduced to
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2. asked by Anonymous
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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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Suppose a radioactive substance decays according to the equation whererepresent the mass in grams after hours. Assume that the
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A radioactive element decays exponentially according to the function Q(t) = Q0ekt.If 100 mg of the element decays to 25 mg in 12
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2. asked by Rania
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A radioactive element decays exponentially according to the function Q(t) = Q0ekt.If 100 mg of the element decays to 25 mg in 12
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2. asked by Rania
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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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Radium 226, which decays according to the function A(t)=A0e^kt where t is the time in years, has a half life of 1612 years. Find
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2. asked by Jim
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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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Radius decays at a rate of that is proportional to its mass, and has a half-life of 1590 years. If 20 g of radium is present
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2. asked by Anonymous
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