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A sample contains 10g of radioactive isotope. How much radioactive isotope will remain in the sample after 3 half-lives?
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A sample contains 10g of radioactive isotope. How much radioactive isotope will remain in the sample after 3 half-lives?

User Nikos Baxevanis
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Answer:

After 1 half-life (500 years), 500 g of the parent isotope will remain. After 2 half-lives (1000 years), 250 g of the parent isotope will remain. After 3 half-lives (1500 years), 125 g of the parent isotope will remain. After 4 half-lives (2000 years), 62.5 g of the parent isotope will remain.

Step-by-step explanation:

User Dimitris Zorbas
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