Nitrogen-13 is used in tracers injected into the bloodstream for positron emission tomography (PET), The half-life of nitrogen-13 is 10,0 minutes. How much time is required for the activity of a sample of nitrogen-13 to fall to 22.2 percent of its original value? mins

Q: Phosphorus-32 is a radioisotope used in the treatment of leukemia and pancreatic cancer. If the…

A: Given, Phosphorus-32 in a sample decreases from 1.2g to 0.30g in 28 days . We have to calculate half…

Q: The half-life time of such element is 20 y, the amount will be remain after 80 y is -- mg.of initial…

A: We have half life as 20 y, we have to calculate the amount left after 80 y , if initial amount is 32…

Q: Phosphorus-32, a radioisotope used in the treatment of leukemia, has a half-life of 14.3 days. If a…

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Q: Substance D initially weights 56 grams. After 6 minutes, it was observed that its mass decreased by…

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Q: A sample of radioactive technetium-99 of half-life 6 hh is to be used in a clinical examination. The…

A: Given: Half-life of isotope = 6 hours. And the time passed = 15 hours.

Q: The half-life of cobalt is 5.3 years. How much of a 1.000- mg sample of cobalt-60 is left after 15.9…

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Q: If a tree dies and the trunk remains undisturbed for 12,000 years, what percentage of original C-14…

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

Q: Nitrogen-13 is used in tracers injected into the bloodstream for positron emission tomography (PET).…

A:

Q: If a tree dies and the trunk remains undisturbed for 1.210 × 10⁴ years, what percentage of the…

A: given data is  half-life is 5730 years remains undisturbed for 1.210 x 104 years

Q: The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The…

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Q: An unknown radioisotope exhibits 8540 decays per second.After 350.0 min, the number of decays…

A: Nuclear reactions are a type of chemical process which lead to the formation of some new nuclei with…

Q: Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-life…

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Q: The half-life of the radioactive isotope radon-222 is 3.82 days. How long will it take for the mass…

A: Recall the following expression to calculate required time of radon-222 to decay from 93.2…

Q: Radioactive phosphorus-32 decays to form sulfur-32 by emission of a β particle. Estimating the…

A: The radioactive phosphorus-32 decays to form sulfur-32 by emission of a β particle. The half-life of…

Q: The half-life of 18F, which is utilised in medical imaging, is 110 minutes. After 300 minutes, what…

A: Given half life = 110 minutes time = 300 minutes

Q: Phosphorus-32 is used in biochemical studies to follow the pathway taken by metabolites. Its…

A: (a) All the radioactive reactions are first order, thus, value of rate constant can be calculated…

Q: ‏C-60 decays with a half - life of 5.27 years to produce Ni - 60 . What the deacy constant for…

A: Half life of C-60 = 5.27 years  Decay Constant , K = ?

Q: One of the radioactive isotopes used in medical treatment or analysis is palladium-103. The…

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Q: Iodine-131 is administered orally in the form of NaI(aq) as a treatment for thyroid cancer. The…

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Q: PLutonium-239, one of the radioactive by-products of nuclear power, represents a serious was…

A: Chemical kinetics is the study of the reaction that how fast or slow a reaction is taking place. The…

Q: The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The…

A: Radioactivity follows First order reaction.   For First order reaction : t1/2 = 0.693k where, t1/2 =…

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

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Q: The half-life of protactinium-234 is 6.69 hours. What fraction of a given amount remains after 26.76…

A:

Q: Strontium-90 is a nuclide that is found in radioactive fallout from nuclear weapon explosions. Its…

A: Given :  Half life = 28 years

Q: The half-life of the radioactive isotope magnesium-20 is 0.600 seconds. How long will it take for…

A: Half-life is the time required for a quantity to be reduced to half of its original value. The…

Q: For the radioactive isotope, phosphorus-32, how much would be used if there is only 3.50 mg left in…

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Q: Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of…

A: Half-life of Cs-137 and initial mass, from which amount of Cs-137 left after 90.6 years.

Q: The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 2.000-mg sample remains after 9.50…

A: First of all let's see the given data in the question, Half-life of cobalt-60 ( t1/2 ) = 5.20 years…

Q: Nitrogen-13 is used in tracers injected into the bloodstream for positron emission tomography (PET).…

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Q: What is the half-life of iron-55 if 5.93 years are required for the activity of a sample of iron-55…

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Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: ⊙ Radioactivity, phenomena follow first order            kinetics                K =2.303t…

Q: what fraction of k-38 remains after 2.00 hours? the half-life of k-38 is 7.71 minutes

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Q: The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 2.000-mg sample remain after 9.50…

A: Given information,     The half-life of cobalt-60 is 5.20 yr.     Mass of sample 2.000-mg     Time…

Q: Phosphorus-32 is used in biochemical studies to follow the pathway taken by metabolites. Its…

A: (a) All the radioactive reactions are first order, thus, value of rate constant can be calculated…

Q: The half life of the radioactive element ubtonium-31 is 10 seconds. If 80 grams of unobtanium-31 are…

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Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

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Q: A tiny sample of a fabric is burned to CO2, and the 14C/12C ratio is 0.350 times the ratio in…

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Q: If a tree dies and the trunk remains undisturbed for 1.195 × 10⁴ years, what percentage of the…

A: Carbon dating is a technique to estimate the age of the tree or rock

Q: plutonium 239 produced in breeder reactors has a half-life of 24100 years how long will it take for…

A: Answer: Time for 10% decay of Pu-239 is 3665.175 years

Q: Iron-59 is used to study iron metabolism in the spleen. Its half-life is 44 days. How many days…

A:

Q: Carbon-11 is a radioactive isotope of carbon. Its half-life is 20 minutes. What fraction of the…

A: Half life t ½ = 20 minutesDecay constant, k = 0.693/ t ½ = 0.693/20 min = 0.03465 min-1

Q: phosphorus -32 decays to form sulfur -32. The half life of phosphorus -32 is 12 days. How much…

A: Given,Phosphorus-32 decays to form sulphur-32The amount of Phosphorus-32 initially present is 62…

Q: An ancient shroud is found to have a C-14 activity of 9.7 disintegrations per minute per gram of…

A: Given that : The initial decay rate of carbon of cloth = 9.7 dis/min. The decay rate of carbon for…

Q: Nitrogen-13 is used in tracers injected into the bloodstream for positron emission tomography (PET).…

A:

Q: Phosphorus-32 is used in biochemical studies to follow the pathway taken by metabolites. Its…

A: a) The rate constant can be calculated from half-life time, K=0.6932t1/2 K=0.693214.3 days=0.0485…

Q: The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The…

A: Given : Half life of phosphorus-32 = 14.3 days And the final activity of sample of phosphorus-32 =…

Q: The half-life of bromine-74 is 25 minutes.  How much of a 40 cpm sample is still active after 75…

A: Since bromine-74 is a radioactive element  hence it will have decay reaction  And since the decay…

Q: A patient swallows a radiopharmaceutical tagged with phosphorus-32 ( 32P), a B- emitter with a…

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Q: Sodium -25 has a half  life of 60.0 s. If 5.00 mg of sodium -25 disintegrated over a period of 3.0…

A: Atoms having same atomic number but different atomic masses are called isotope. For one there are…