Mathematics

Mathematics, 01.12.2019 21:31, davidleew24

Sean is conducting an experiment with an isotope of a particular element that has a half-life of 4 hours. he begins with a sample of the isotope with a mass of 85 grams. he then measures the mass of the object every hour. what is the approximate mass of the sample after 24 hours?

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Mathematics, 25.06.2019 02:00, solisemily62

The half-life of a newly discovered radioactive isotope is 6.4 hours. initially, there are 56 grams of a sample of the isotope. a) how many grams of the isotope remains after 24 hours? show all of your work. round your answer to the nearest hundredth of a gram. b) how many hours will have passed when the sample of the isotope to reaches 6 grams? show all of your work.

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Physics, 23.08.2019 05:30, zachcamp5298

Suppose you start with a sample with 6.030×10^8 nuclei of a particular isotope. this isotope has a half-life of 537 s. what is the decay constant for this particular isotope? how many nuclei remain after 1.50×10^3 s? what is the activity of the sample at the beginning of the experiment?

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Biology, 29.09.2019 13:00, Looneytunness1806

Which statements best describe half-lives of radioactive isotopes? check all that apply. the half-life varies depending on the isotope. the half-life is the same for every isotope. half-lives are always only minutes long. half-lives range from fractions of a second to billions of years. the half-life of a particular isotope is constant. the half-life of a particular isotope changes constantly.

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Mathematics, 20.11.2019 23:31, moisealafleur

Sean is conducting an experiment with an isotope of a particular element that has a half-life of 4 hours. he begins with a sample of the isotope with a mass of 92 grams. he then measures the mass of the object every hour. what is the approximate mass of the sample after 20 hours?

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