The half life of carbon-14 is approximately 6000 years. How long will it take a sample of carbon-14 to deplete to one fifth of its original amount?
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Q: The half life of C-14 is 5730 years. What percentage of C-14 remains 4850 years after a living…
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The half life of carbon-14 is approximately 6000 years. How long will it take a sample of carbon-14 to deplete to one fifth of its original amount?
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- if the half life of uranium 235 is 700 million years and you have 64 atoms of it, how many 700 million year units of time will pass before 1 atom of uranium 235 is left?The half-life of carbon-14 is 5730 years. If 6.25% of the original sample remains, how old is the sample?The half life of carbon-14 is 5730 years. How long will a certain amount of carbon – 14 decay by 90% of its original amount?
- The half-life of carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only 68% of the carbon-14 expected in living matter, when did the tree die?The half-life of Carbon-14 is 7 years. How much of an initial 168 g sample will remain after 30 years?If there were originally 400 grams of carbon-14 in an object, how many grams would remain after 3,200 years?
- The half life of Thorium is 75,000 years. How much of the substance will be left after 3 half livesA naturally occurring isotope of hydrogen called tritium has a half-life of 12.3 years. If a sample of tritium is one-thirty-secondth of its original amount, how much time has elapsed?The half life of C-14 is 5730 years. What percentage of C-14 remains 4850 years after a living organism dies?
- The half-life of plutonium-239 is 24,300 years. If a nuclear bomb released 8 kg of this isotope, how many years would pass before the amount is reduced to 1 kg?The isotope carbon-14, 14/6C, is radioactive and has a half-life of 5 730 years. If you start with a sample of 1 000 carbon-14 nuclei, how many nuclei will still be undecayed in 25 000 years?The half-life of Oxygen-21 is 3.42 seconds. After roughly 13 seconds have passed, what fraction, in decimal form, is left undecayed?