Carbon-14 has a half-life of 5730 yearsyears. In a plant fossil, you find that the 14C14C has decayed to 1/32.0 of the original amount. How long ago was this plant alive?

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A:

Q: A bone has a carbon-14 decay rate of 4.85 disintegrations per minute per gram of carbon. If a living…

A: Given : Decay rate of carbon-14 in bone = 4.85 disintegration per minute per gram of carbon Decay…

Q: What is the original mass of C-14 in a sample if 10.00 mg of it remains after 20,000 years? The…

A: The C-14 decays according to first order kinetics. Since we know that the relationship between the…

Q: 52. Estimating the Date That a Prehistoric Man Died The bones of a prehistoric man found in the…

A: Radioactive disintegration follows the first-order kinetics, i.e., the rate of the reaction depends…

Q: Answer  4460 years

A: Expression for half-life period of radioactive element is given as,

Q: The carbon-14 decay rate of a sample obtained from a young tree is 0.256 disintegration per second…

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Q: ) Cobalt―60 is a radioactive isotope with a half-life of 5.26 years and emits beta particles.…

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A: Given :   Time (t) = 20 years  Percentage of substance decays = 45 %

Q: The initial amount of the radioactive material V in a rock is determined to be 6.78 mg. Only 1.46 mg…

A: final answer is = 5.3200 mg

Q: Iodine (131 I)  is used in diagnostic and therapeutic techniques in the treatment of thyroid…

A:

Q: life of 1.27 × 109 yr. The age of a mineral sample that has a mass ratio of 40Ar to 40K of 0.330 is…

A: The answer is given as follows

Q: 8. Strontium-90 has a half-life of 28.1 years. Starting with 2.08 mg of this isotope, what is the…

A: Radioactive decay follows first order kinetics. Using this we will calculate all parts of questions.

Q: a 45.91 mg sample of a pure radioisotope has a half-life of 52 days, what will be the mass of the…

A: Given 45.91 mg sample of a pure radioisotope has a half-life of 52 day mass of the original…

Q: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to…

A: Given,                 Isotope = 14C                 Half life =5730 years                 Remaining…

Q: A sample of coral has a carbon-14 content of 12.5% the value of living coral.  If the half-life of…

A: Given  Half life of Carbon - 14 = 5730 years Remaining amount   = 12.5 %  Time ( t ) = ?

Q: An unknown radioactive substance has a half-life of 3.20 hours. If  20.8 g of the substance is…

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Q: Iodine-131 is often used in nuclear medicine to obtain images of the thyroid. If you start with…

A: We have given that  Iodine-131 is often used in nuclear medicine to obtain images of the thyroid. If…

Q: An archeological sample was predicted to be 9,415 years old. If the C-14 measured at present in the…

A:

Q: The carbon-14 decay rate of a sample obtained from a young tree is 0.260 disintegration per second…

A: Initial activity = 0.260 dpspg Final activity = 0.181 dpspg Half life = 5715 year

Q: The carbon-14 decay rate of a sample obtained from a young tree is 0.263 disintegration per second…

A: Solution - According to the question - Given - Ao = initial activity = 0.263dps A = activity at time…

Q: A normal adult jawbone contains 200 mg of Carbon-14 in a living person. If scientists found a…

A:

Q: A normal adult jawbone contains 200 mg of Carbon-14 in a living person. If scientists found a…

A: Radioactivity is the phenomenon in which an unstable nucleus loses energy.

Q: A piece of charcoal from a tree killed by the volcanic eruption that formed the crater in Crater…

A: The radioactive decay follows first-order kinetics. We know that the half-life of carbon-14 is 5730…

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Q: The iodine-131 nuclide has a half-life of 8.0 days. If you originally have a sample containing 728-g…

A: Known: Half-life  = 8.0 days Original mass = 728 g Time elapsed = 6.86 weeks = (6.86 ×7)…

Q: Archaeologists used pieces of burned wood, or charcoal, found at the site to date prehistoric…

A: Given data is as follows: The initial amount of C-14, A° = 100 The amount left after time "t" , A=…

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Q: A normal adult jawbone contains 200 mg of Carbon-14 in a living person.  If scientists found a…

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Q: Consider the I-131 nucleus that is used to treat thyroid. Mass of I-131 is 130.78302 amu. 1) If the…

A: We have to used equation of first order rate constant. As we know nuclear reaction follows first…

Q: Consider the I-131 nucleus that is used to treat thyroid. Mass of I-131 is 130.78302 amu. 1) what is…

A: To answer questions regarding I-131 nucleus.

Q: Archaeologists used pieces of burned wood, or charcoal, found at the site to date prehistoric…

A: Given, half life of C-14 = 5730 years. Exponential decay equation : A(t) = Ao ekt Since half life is…

Q: Carbon-14 has a radioactive half-life of about 6,000 years. If an organism has 10 g of carbon-14 in…

A: Provided half life (t1/2)=6000year Also, provided time(t)=6000year Initial amount (A•)=10g of…

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Q: Given that the ratio of C/1C 13.6 counts per minute per gram living matter remains constant, if a…

A: This problem is based on radioactivity. Since all the radioactive reactions generally follows first…

Q: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to…

A:

Q: Carbon-11 is a radioactive isotope of carbon. Its half-life is 20.3 minutes. What fraction of the…

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Q: an artifiact has a carbon-14 concentration that is 12.5%(1/8th) of that found in living organisms.…

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Q: Cobalt-60 is a strong gamma emitter that has a half-life of 5.26 yr. The cobalt-60 in a radiotherapy…

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Q: The half-life of tritium, H-3, is 12.3 years. How much time would it take for a sample to drop to…

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Q: Phosphorus-32 has a half-life of 14.0 daysdays. Starting with 2.00 gg of 32P32P, how many grams will…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: The cesium-137 nuclide has a half-life of 30 years. After 90 years, about 10 g remains. The original…

A: Radioactive decay follow first order kinetics. Half life of Ce is 30 yrs. Mass of original sample =…

Q: A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What is…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: A rock contains the radioactive isotope K − 40 that decays with a half-life of 1.3 billion years and…

A: Answer: Nuclear reactions are first order reactions, therefore integrated rate law of first order…

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. How long would it take a sample to…

A: Given that -  Hydrogen-3 is tritium which is a radioactive isotope with half life = 12.3 years…