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help please
If you have 100 grams of a radioactive isotope with a half-life of 10 years:
part a: How much of the isotope will you have left after 10 years?
part b: How much of the isotope will you have left after 20 years?
part c: How many half-lives will occur in 40 years?

help please If you have 100 grams of a radioactive isotope with a halflife of 10 years part a How much of the isotope will you have left after 10 years part b H class=

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mhanifa

Answer:

part a: How much of the isotope will you have left after 10 years?

  • 100/2 = 50 g

part b: How much of the isotope will you have left after 20 years?

  • 50/2 = 25 g

part c: How many half-lives will occur in 40 years?

  • 40/10 = 4

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