3.A particular radioactive isotope has a half-life of (2.50+A) hours. If you have (24.5+B) g of...

3.A particular radioactive isotope has a half-life of (2.50+A) hours. If you have (24.5+B) g of the isotope at 10:00 AM, how much will you have at 7:30PM? Give your answer in grams (g) and with 3 significant figures. A:4 B:5

4.Consider a pure sample of a radioactive isotope with a mass number of (46+A). If the sample has mass of (25.0+B) micrograms and the isotope has a half-life of (4.50+C)x10⁶ years, determine the decay rate for the sample. Give your answer in decays/second and with 3 significant figures. A:4 B:5 C;11

5. particular radioactive isotope has a half-life of (16.8+A) years. If the initial amount of the isotope was (24.5+B) g, how years later will the only (3.20+C) g remain of this isotope? Give your answer in years and with 3 significant figures. A:11 B:54 C:4

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genius_generous answered 1 year ago

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