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radium decomposes at a rate

radium decomposes at a rate proportional to the amount instantaneously present.Find the half-life of radium if three-fourths of
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2. asked by HELP ME PLEASE
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please help me ...Experiments show that radium at rate proportional to the amount of radium present at the moment . if half life
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2. asked by NOEL
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experiments show that radium disintegrates at a rate proportional to the amount of radium present at the moment . if half life
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2. asked by NOEL
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Radium is a member of the alkaline earth family. In addition to being a part of this family, what is another property of radium
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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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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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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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What are some things that are in the US that use or need radium to operate?Radium has very few commercial uses these days, it
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2. asked by Lanna
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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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