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about how much would have been left after three half-lives? A parent isotope has a half-life of 500 000 years. If a rock contained 10 mg of the parent ise it formed, how much parent isotope would be left after 1.5 million years? A sample of wood from an Egyptian mummy case taken from an archaeological site is s

about how much would have been left after three half-lives? A parent isotope has a half-life of 500 000 years. If a rock contained 10 mg of the parent ise it formed, how much parent isotope would be left after 1.5 million years? A sample of wood from an Egyptian mummy case taken from an archaeological site is s

Introductory Chemistry For Today
Introductory Chemistry For Today
8th Edition
ISBN:9781285644561
Author:Seager
Publisher:Seager
Chapter10: Radioactivity And Nuclear Processes
Section: Chapter Questions
Problem 10.51E
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If the amount of the parent isotope in the original sample of a rock had been 48 grams, about how much would have been left after three half-lives? 1. 2. A parent isotope has a half-life of 500 000 years. If a rock contained 10 mg of the parent isotope when it formed, how much parent isotope would be left after 1.5 million years? 3. A sample of wood from an Egyptian mummy case taken from an archaeological site is subjected to radiocarbon dating. The activity due to 14C has a specific activity of 10.41 d/min.g. The activity of a carbon sample of equal mass from fresh wood is 16.3 d/m.g. How old is the case?
Transcribed Image Text:If the amount of the parent isotope in the original sample of a rock had been 48 grams, about how much would have been left after three half-lives? 1. 2. A parent isotope has a half-life of 500 000 years. If a rock contained 10 mg of the parent isotope when it formed, how much parent isotope would be left after 1.5 million years? 3. A sample of wood from an Egyptian mummy case taken from an archaeological site is subjected to radiocarbon dating. The activity due to 14C has a specific activity of 10.41 d/min.g. The activity of a carbon sample of equal mass from fresh wood is 16.3 d/m.g. How old is the case?
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