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After three half-lives what fraction of a radioactive sample will remain?
Wiki User
∙ 7y ago
Approx 1/8 will remain.
Wiki User
∙ 6y ago
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What fraction of a radioactive sample remains after three half - life?
It is 1/8 .
After three half-lives what fraction of a radioactive sample remains?
1/8 of the original amount remains.
What fraction of an original sample of a radio isotope remains after 3 half-life periods?
One eighth remains.
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What is the significance of a half life of a radioisotope?
It tells what fraction of a radioactive sample remains after a certain length of time.
What fraction of a radioactive sample remains after three half - life?
It is 1/8 .
What fraction of a radioactive sample remains after three half-lives?
Not sure what you mean by "had-lives". After 3 half lives, approx 1/8 would remain.
After three half-lives what fraction of a radioactive sample remains?
1/8 of the original amount remains.
What fraction of a radium sample will remain after 3240?
The answer depends on 3240 WHAT: seconds, days, years?
How much of an 800-gram sample of potassium-40 will remain after 3.9109 years of radioactive decay?
100 grams
Why After three half-lives what fraction of a radioactive sample remains?
After three half-lives, only 1/8 (or 12.5%) of the original radioactive sample remains. This is because each half-life reduces the amount of radioactive material by half, so after three half-lives, you would have (1/2) * (1/2) * (1/2) = 1/8 of the original sample remaining.
What percentage of a radioactive sample remains after 5 half-lives?
After 5 half-lives, 3.125% (or 1/2^5) of a radioactive sample remains. Each half-life reduces the sample by half, so after 5 half-lives, there is only a small fraction of the original sample remaining.
How much cesium would remain from a 10g sample after 4 years?
I suppose that you think to the radioactive isotope Cs-17; After 4 years remain 9,122 g.
What happens to a radioactive material over time?
Radioactive materials decay over time, emitting radiation in the form of alpha, beta, or gamma particles. As the material decays, it transforms into isotopes of other elements until it reaches a stable state. The rate of decay is measured by the material's half-life, which determines how long it takes for half of the radioactive sample to decay.
What fraction of the radioactive atoms currently present will be left after four minutes if a sample of gas has a half life of two minutes?
After two minutes, half of the radioactive atoms will remain. After another two minutes, half of the remaining atoms will decay, leaving 1/4 of the original amount. Therefore, 1/4 of the radioactive atoms will be left after four minutes.
How much of an 800-gram sample of potassium-40 will remain after 3.9 X 109 years of radioactive decay?
100 grams
