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An eighth remains.

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Q: What fraction of a sample remains after three half lives?
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Why After three half-lives what fraction of a radioactive sample remains?

The fraction that remains is 1/8.


After three half-lives what fraction of a radioactive sample remains?

1/8 of the original amount remains.


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 will remain?

Approx 1/8 will remain.


Sample of the three models of a fraction?

There are three models of a fraction namely area model, liner model and set model.


What fraction of a radioactive sample decays after three half lives?

If I take a radioactive sample of 400 moles of an unknown substance and let it decay to the point of three half-lives I would have 50 moles left of the sample. 1/2 of what is left will decay in the next half-life. At the end of that half-life I will have 25 moles left of the unknown substance or 4/25.


How long will it take for three-fourths of a sample of caesium-137 to decay?

It will take two half-lives or about 60.34 years for three-fourths of a Cs-137 sample to decay.


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 the daughter product has formed?

91.16% of the daughter product has formed after 3.5 half lives.


How many undecayed M and Ms would remain out of a sample of 600 M and Ms after three half lives?

75


If three fourths of a pizza was left in the refrigerator and someone ate one third of it What fraction of the pizza was left?

5/12 of the pizza remains.