The half-life of the radioactive isotope astatine-218 is 2.00 seconds. How long will it take for the mass of a sample of astatine-218 to decay from 73.7 micrograms to 9.21 micrograms? seconds

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

A: Answer : Since radioactivity follows first order kinetics . Given : Half life = 14.3 days . Initial…

Q: Uranium-238, 238U, has a half-life of 4.51 x 109 years. How long will it take for 1.0 g of 238U to…

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Q: The half-life of strontium-87 is 2.8 h. What percentage of this isotope will remain after 8 h and 24…

A: Radioactive decay is the breaking of unstable nuclei into stable ones by emitting radiation. These…

Q: Iron-59 is commonly used as a source of B particles. How long does it take for 87.5% of a sample of…

A: Radio active decay is an example of 1st order reaction. and for 1st order reaction the rate law is…

Q: The half-life of the radioactive isotope uranium-234 is 2.47 × 10° years. How long will it take for…

A: We have given that  Half life of Uranium-234 = t1/2 = 2.47×105 years [N]0 = 72.4 μg  [N]t = 9.05 μg…

Q: 5. Carbon-11, used in medical imaging, has a half-life of 20.4 min. The carbon-11 nuclides are…

A: Answer: Relation between quantity of radioactive substance and n number of half lives is shown…

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: Iodine-131 used to treat hyperthyroidism, has a half-life of 8.04 days. For a sample containing 10.0…

A: Half life time = 8.04 days  Initial mass = 10.0 μg  Time = 32.2 days Mass remain after 32.2 days = ?…

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: Americium-241 is widely used in smoke detectors. The radiation released by this element ionizes…

A: The activity for the sample can be described as the amount of the radioactive particles are…

Q: The half-life of the radioactive isotope phosphorus-32 is 14.3 days. How many days does it take for…

A: The equation for 1st order decay is:

Q: The half life of a certain substance is 5.6 days. How long will it take for 100 g of the substance…

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

Q: (d) How long does it take for 90% of a given quantity of the radioactive element cobalt-60 to decay,…

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Q: 11. The half-life of a newly discovered element, Jimmium, is 55 minutes. How long will it take a…

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Q: Carbon-11, used in medical imaging, has a half-life of 20.4 min. The carbon-11 nuclides are formed,…

A:

Q: Radioisotope X has a half-life of 4.0 h. Based on the figure below, if the original sample of the…

A: Half life (t1/2) :-  The time required for the concentration of reactant to reduce to half of its…

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

A:

Q: 6. A rock contains 0.257 mg of lead-206 for every milligram of uranium-238. The half-life for the…

A: Given, Half-life - 4.5 × 109 yr. 1 mg U-238 contains 0.257 mg of Pb-206.

Q: The radioactive isotope, used in the diagnosis of tumors, has a biological half-life of 47 hours. If…

A: Given  Half life ( t1/2 )         = 47 hour  Time ( t )                  = 26 hour  initial quantity…

Q: The half-life of the radioactive isotope polonium-214 is 1.64x104 seconds. How long will it take for…

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Q: The isotope strontium-90 is produced during testing of nuclear weapons.  If 100.0 mg of strontium-90…

A: Given  Initial Amount of Sr - 90  (A)o = 100 mg  Half life time ( t1/2 )  =  29 years  Time ( t ) =…

Q: What is the half-life of polonium-210 if it takes 828 days for a 100.0 g sample to be reduced to 1.6…

A: Polonium-210 is a radioactive element so it's decay is followed first order kinetics.

Q: Chemistry If you have an 88 gram sample of radioactive material decaying and the half life is 12…

A: Introduction: Radioactive decay: Radioactive decay or nuclear disintegration is a process in which…

Q: A sample of a newly discovered element, West Virginium, has a half-life of 288 years.  How long…

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Q: Heeded for this question. The half-life of the radioactive isotope thallium-210 is 1.30 minutes. How…

A: half-life = t1/2  = 1.30 min initial concentration = ao = 51.3 microgram final concentration = a =…

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

A: Given: The half life, (t1/2)=27.7 days. The initial concentration of Cr-51=28.7 mg 981

Q: If the first-order half-life of tritium (³H) is 12.26 years, what amount of time is necessary for it…

A: Given data : half-life of tritium (³H) is 12.26 years Let the initial amount be x. Also given that,…

Q: Uranium-238 forms thorium-234 after radioactive decay and has a half-life of 4.5 x 10^9 years. How…

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Q: In medical application prior to having an MRI, a patient will be administered a dye containing a…

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Q: The half-life of plutonium-239 is 24,100 years. How long will it take for a 100 g sample of…

A: Given,  Half life, t1/2 = 24100 years Initial amount = 100 g Reduced amount = 25 g Formula Used…

Q: Strontium-90, a beta emitter, has a half-life of 28.1 yr. If 29.1 mg of 90Sr were incorporated into…

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Q: 18.6% of a sample of zinc-65 decays in 64.4 d, what is the half-life of this isotope (in days)?

A: We know that, for any radioactive decay, the rate constant is  K = (1/t) ln (No/ N) Where  K = rate…

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

A:

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

A: The time will take a 28.0 g28.0 g sample of iron‑59 to decay to 1.75 g has to be calculated

Q: Radioactive iodine-131 decays with a half-life of 8.0 days. A chemist obtains a fresh sample of…

A:

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: After 42 years, what mass remains of a 100.0 g sample of a radioactive isotope with a half-life of…

A:

Q: The radioactive isotope Pu-238, used in pacemakers, has a half-life of 87.7 years. If 1.6 milligrams…

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Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A: The loss of elementary particles from an unstable nucleus results in the transformation of the…

Q: 9) U-235, one of the nuclides in spent nuclear reactor fuel, has a half-life of 703 million years.…

A: Recall the following expression to calculate required time for U-235 to be reduced to 3% of this…

Q: The half-life of radioactive cobalt is 5.27 years. Suppose that a nuclear accident has left the…

A: Given the half-life of cobalt=5.27 years.

Q: If the first-order half-life of tritium (°H) is 12.26 years, what amount of time is necessary for it…

A: The half-life is the time taken for the reaction to complete half of its original concentration

Q: How much time is required for 84% of the isotope to decay?

A: Given: Iodine-131, which is used to treat thyroid cancer, has a half-life of 8.04 days. The…

Q: Copper(II) acetate containing copper-64 is commonly used to study brain tumors. This isotope has a…

A:

Q: The half-life of carbon-14, an isotope used in archaeological dating, is 5730 years. What percentage…

A: The age of the sample follows first order kinetics. This method is known as carbon dating. First…

Q: The radioactive isotope Pu-238, used in pacemakers, has a half-life of 87.7 years. If 1.9 milligrams…

A: Given : Half - life = 87.7 years Initial Pu-238 = 1.9 mg

Q: What is the half- life of a radioisotope if it decays to 12.5% of its radioactivity in 12 years?

A: Let the initial concentration of the radioactive substance be A. The concentration of the substance…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.