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39mg radioactive with 1/2 life

39mg radioactive with 1/2 life is decay total in 2.5 years. How many mg it remain if half of the amount is decay in 2 years?Than
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2. asked by Marie
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Radioactive nuclei are produced in an irradiated sample at the rate of 10 s-1. If the number in the sample builds up to a
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2. asked by Ali
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The half life of a certain radioactive element is 800 years. How old is an object if only 12.5% is f the radioactive atoms in it
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2. 17 views
A particular radioactive substance has a half-life of 4 minutes. How long will it take for 250 g of this radioactive material to
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2. asked by Anonymous
3. 655 views
If a radioactive isotope has half life of 5 days,how long will it take for its radioactive strength to be a maximum of one
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2. asked by Bree
3. 716 views
Technetium-99m is a radioactive isotope commonly used in medicine as a radioactive tracer. A radioactive tracer is an isotope
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2. asked by JACK HAMMMMMMER
3. 110 views
Technetium-99m is a radioactive isotope commonly used in medicine as a radioactive tracer. A radioactive tracer is an isotope
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2. asked by Snaggy
3. 148 views
Technetium-99m is a radioactive isotope commonly used in medicine as a radioactive tracer. A radioactive tracer is an isotope
1. 1 answer
2. 109 views
Technetium-99m is a radioactive isotope commonly used in medicine as a radioactive tracer. A radioactive tracer is an isotope
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2. asked by cyan
3. 120 views
Technetium-99m is a radioactive isotope commonly used in medicine as a radioactive tracer. A radioactive tracer is an isotope
1. 1 answer
2. 117 views