Iodine-131 has a half life of 8 days. Your friend with a thyroid condition is given 40 mg of I-131 to drink. Assuming that all the I- 131 stays in her body, how much will remain after 24 days?

Q: Carbon-14 has a half-life of 5730 yearsyears. In a plant fossil, you find that the 14C14C has…

A: Given information is as follows: Half life t12=5730 years Initial amount A0 = 1.00 g Final amount  A…

Q: Carbon-14 is used in radiocarbon dating. The half-life of carbon-14 is 5.73*10^3 years. How many…

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Q: bromine-88 is radioactive and has a half life of 16.3 seconds. how long would it take a sample to…

A: Applying concept of radioactive decay as first order reaction.

Q: carbon from a cypress beam obtained from the tomb of an ancient egyptian king gave 9.2…

A: The decay constant can be calculated as

Q: Iodine-131 has a half-life of 8.0 days. How long will it take 10 µg of 131I to decrease to 1/100 of…

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Q: While exploring a coal mine, scientists found plant fossils which had been preserved by an…

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Q: If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of…

A: Given : Half life of I-131 = 8 days Initial amount of I-131 = 10 mg And time passed = 24 days

Q: A 116.8 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A: Given- Initial amount=116.8ng Final amount=14.60ng Time=47days

Q: Polonium-210 is a radioactive substance with a half-life of 138 days. If a nuclear facility is…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Moonrock collected by a US Apollo mission is estimated to be 4.30 billion years old by uranium/ lead…

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Q: Part 2: Half Life (section 5.4) Radioisotopes are used in imaging to aid in diagnosing or treating…

A: It is given that a 131I isotope is undergoing a reaction, and the reaction of radioisotopes is…

Q: Technetium-99m, an important radionuclide in medicine, has a half-life of 6.0 hours. What percentage…

A: Formula for radioactive decay is given as,

Q: Suppose that 10 units of beryllium are present in a living organism and that the half-life of…

A: Here i have calculated the age of material

Q: If the half-life of a radioactive substance is 500 million years and you have 48 atoms of it, how…

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Q: 32.  A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What…

A: Given : Half life = 5700 years

Q: 3. An archeologist unearths a bone sample and wants to know the age of the initial amount of…

A: Given:  Present amount of bone = 49 %  Half life = 5730 years

Q: 32) The charcoal from ashes found in a cave gave 3.34 14C counts per gram per minute. Wood from the…

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Q: 210Rn has a half-life of 2.4 hours. You have a sample that contains 24 g of 210Rn. How much 210Rn…

A: The relationship between the half-life, T1/2 and the decay constant is given by  or,  The…

Q: The half-life of Po-218 is 3.05 minutes. How many minutes does it take for a sample of Po-218 to…

A: Given: Half-life of Po-218 = 3.05 minutes. And the final amount of Po-218 isotope remaining = 2.35 %…

Q: Carbon-14 has a half-life of 5730 years, how old is a dress that was found to have a specific…

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Q: A wooden boat discovered just south of the Great Pyramid in Egypt had a carbon-14 content of…

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Q: days. Suppose the initial amount of Thorium-234 is 192.9 mg, find the amount of Thorium-234 remains…

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Q: A 450.0-mg sample of technetium-99m was used for a diagnostic test.  If technetium-99m has an…

A: Given - Initial amount=450.0mg Half life=4.8h Time=48h

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…

Q: the Cs-131 by life has a half life of 30 years. after 120 years, 2.6 g remain. what is the original…

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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…

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Q: Solve the following problems and show complete solution. A. Half life of Sr90 is 29 years. What…

A: A.     Half life of Sr-90 ( t1/2) = 29 y           Let ' t '    =  100 y       n × t1/2   =  t…

Q: Part 1.1. If a radioactive element has a half-life of 2.5 million years, the amount of parent…

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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: 24. A radioactive substance weighing 18.00 grams undergoes radioactive decay in 12.5 days and has…

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Q: Tc-99m is the most commonly used radioactive isotope in medicine. It is a gamma emitter and has a…

A: The half life of Tc-99 is six hours. There will be two half lives involved in twelve hours. The…

Q: Certain radioactive isotope has a half-life of 3.9 minutes. If we initially have 7168 grams of this…

A: According to the question, we have: Half life of radioactive isotope = 3.9 minutes.  Initial mass =…

Q: Element X has a half life of 9 days and decays into element Y. How much element Y is created after…

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Q: The half-life of carbon-14 is 5730 years. What does this statement mean? [A] It means that carbon-14…

A: Given: The half-life t12 of carbon-14 is 5730 years

Q: Neptunium-237 has a half-life of 2.1 million years. The amount N of 400 kilograms of neptunium-237…

A: Exponential decay According to decay law, it calculates the amount of undecayed nuclei in a…

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

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Q: The cesium-131 nuclide has a half-life of 30 years. After 120 years, about 3 g remains. The original…

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Q: A radioactive isotope has a half-life of 46.3 minutes. how long will it take for the radiation from…

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Q: long after an animal dies will it take for the C14 to decrease by 60 percent (to 40 percent of its…

A: Answer  Calculate the half life

Q: The radioactive isotope *Pa decays by beta emission. 234 If the mass of a sample of protactinium-234…

A: Initial mass of isotope M = 83.5 ug Final mass of isotope M' = 20.9 ug  Time of decay t = 13.5 hours…

Q: Cobalt-60 is a beta emitter with a half life of 5.3 years. Approximately what fraction of cobalt-60…

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Q: A solution of sodium iodine containing the radioactive isotope lodine-131 was given to a patient. If…

A: These radioactive decay reactions are the first order reactions . In these type of reactions , rate…

Q: Technetium‑99m, an important radionuclide in medicine, has a half‑life of 6.0 hours. What percentage…

A: Given  Half life ( t1/2 ) = 6 hours

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: Cesium-131 has a half-life of 9.7 days. What percent of a cesium-131 sample remains after 64 days?…

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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: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: The solution is as

Q: Technetium-99m is an important isotope used in medical imaging (the m stands for metastable).  Each…

A: The time required to reduce the concentration to half of the initial concentration of the substance…