Chemistry

Chemistry, 13.07.2019 13:00, calc14

How old is a fossil that has radioactivity decayed through 4 half-lives of carbon -14?

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Physics, 28.06.2019 01:30, snoodledoodlebop

Arianna finds some fossil bones while digging in her backyard. could they be dinosaur bones? using carbon dating, she determines that 3% of the original radioactive carbon-14 is still radioactive. (the rest has decayed to nitrogen-14.) approximately how many half-lives have occurred? the half-life of carbon-14 is 5,730 years. this means that the animal died approximately years ago.

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Physics, 30.06.2019 03:30, pedrojsq271

Arianna finds some fossil bones whip digging in her backyard. could they be dinosaur bones? using carbon dating, she determines that 3% of the original radioactive carbon-14 is still radioactive. (the reef has decayed to nitrogen-14.) approximately how many half-lives have occurred? the half-life of carbon-14 is 5,730 years. this means that the animal died approximately years ago.

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Biology, 22.07.2019 12:20, rachael382

Plz asap will mark james wants to estimate the absolute age of an animal fossil. however, test results show that the fossil doesn’t contain any atoms of carbon-14. what can james conclude about the lack of carbon-14? a. the animal, whether living or dead, never had carbon-14 in its system. b. the animal’s carbon-14 decayed long before the animal died. c. finding another fossil nearby without carbon-14 will guarantee that he has matching fossils. d. without carbon-14, it will be an impossible task to estimate the age of the fossil. e. without carbon-14, james can use relative dating to estimate the age of the fossil.

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Geography, 26.07.2019 17:30, jfox8741

James wants to estimate the absolute age of an animal fossil. however, test results show that the fossil doesn’t contain any atoms of carbon-14. what can james conclude about the lack of carbon-14? a.the animal, whether living or dead, never had carbon-14 in its system. b.the animal’s carbon-14 decayed long before the animal died. c.finding another fossil nearby without carbon-14 will guarantee that he has matching d.fossils. e.without carbon-14, it will be an impossible task to estimate the age of the fossil. f.without carbon-14, james can use relative dating to estimate the age of the fossil.

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How old is a fossil that has radioactivity decayed through 4 half-lives of carbon -14?...

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