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A sample of radioactive isotope

If a 100.0 gram sample of a radioactive isotope goes through three half-lives, how much of the original radioactive isotope will
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2. asked by OhSnap
3. 1,210 views
Gallium65, a radioactive isotope of gallium, decays by first order-kinetics. The half-life of this isotope is 15.2 min. How long
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2. asked by Val
3. 4,206 views
A sample of radioactive isotope I is to be used for medical diagnosis of the kidneys. The isotope has a half-life of 8.0 days,
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2. asked by Hannah
3. 699 views
A certian radioactive isotope has a half-life of 1 hour. If you start with 1 gram of the material at noon, how much of the
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2. asked by Judy
3. 762 views
How many half lives will it take for a sample of a radioactive isotope containing 20000 radioactive nuclei to decay to 2000
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2. asked by Dianne
3. 755 views
Technetium-99m is a radioactive isotope frequently employed in medical applications as a radioactive tracer. A radioactive
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2. asked by T-Swizzle
3. 71 views
Technetium-99m is a radioactive isotope frequently employed in medical applications as a radioactive tracer. A radioactive
1. 1 answer
2. 55 views
Technetium-99m is a radioactive isotope frequently employed in medical applications as a radioactive tracer. A radioactive
1. 1 answer
2. 74 views
9. Assume you began with 10 g of a radioactive parent isotope. How many grams of parent isotope will be present in the same
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2. asked by Christian ChimChim
3. 1,398 views
A radioactive sample contains 2.45g of an isotope wiht a half life of 3.8 days. How much of the isotope in grams remains after
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2. asked by Monique
3. 2,854 views