Calculate how long will it take for a sample of a radionuclide with a half-life of 30.9 days decay to 1.0% of its original value.

Q: A radioactive sample contains 3.01×1018 atoms of a nuclide that decays at a rate of 3.28×1013…

A: The radioactive decay follows first-order reactions. Therefore, N = N0 e -λt

Q: How much time is required for a 6.25-mg sample of 51Cr to decay to 0.75 mg if it has a half-life of…

A: The initial amount of the sample = 6.25 mg The amount of sample after time t = 0.75 mg. The…

Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: The Radioactive decay follows first-order kinetic and thereby its formulae. As we know, t1/2 × k =…

Q: Fluorine-18, which has a physical half-life of 110 min, is used in PET scans. if 1.00g of…

A: The fluorine-18 sample was shipped at 5:00 PM and arrives the laboratory at 9:30 AM in the next…

Q: A radioactive nuclide 60/27 Co has a half-life of 5.27 years. Calculate the mass of 60/27Co that…

A: Given the half-life period of radioactive nuclide 60/27 Co has a half-life of 5.27 years.  Mass of…

Q: Radium 223 decays with a half life of 11.4 days. How long will it take for a 0.240mol sample of…

A: Half life of radioactive elements is given by    t1/2 =0.693λ      λ = disintegration constant.…

Q: 40K decays to 40Ar with a half life of 1.27x10^9 years. What is the age of a rock in which the…

A: Recall the expression of remaining amount due to radioactive disintegration Remaining amountA=A∘2nSo…

Q: A radioactive isotope has a half life of 17.4 minutes. How long will it take for the radiation from…

A: Half life is a time taken to half the concentration of the substance present. here , the radioactive…

Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 40.8 days decay…

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Q: A radioactive sample contains 1.55 g of an isotope with a half-life of 3.8 days. What mass of the…

A: The process in which energy is lost by unstable atomic nucleus via radiation is known as radioactive…

Q: You have a sample 100.0 g sample of lodine-135. a) Determine the half-life of a radionuclide if…

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Q: If the half life of a radioactive element is 32.8 years, how many years will it take for a sample to…

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Q: An ancient wood sample is known to be 2500 years old. a. Knowing that the half-life of carbon is…

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Q: The half-life of the nuclide 211 At is 7.5 h. If 0.100 mg of this nuclide is administered for…

A: The answer to the following question is-

Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 31.3 days decay…

A: Given, Half life = 31.3 days  Time , t = ?

Q: 8. Radioactive Iodine-131, with a half-life of eight days, is a common fission product and thus is…

A: The expression for the first order radioactive decay is shown below: Where; t = time A0 = initial…

Q: How many of the nuclei of a radioactive sample containing 2048nuclei decay in 3 years, if its half…

A: The number of nuclei of a radioactive sample containing 2048 nuclei that decays in 3 years is to be…

Q: A certain radioactive nuclide has a half life of 7.00 hour(s). Calculate the rate constant for this…

A: Given that :-  Half life of nuclide = 7 hours  Half life of nuclide = 7 × 60 × 60 sec  We know that…

Q: Determine the decay constants ( in seconds) for iodine and magnesium given half lives are 8.04 days…

A: Relationship between half life and decay constant is given as,

Q: Radium-221 has a half of 30 sec. How long will it take for 82% of a sample to decay?(Round your…

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Q: A sample of Tl-201 has an initial decay rate of 5.88 × 10^4/s. How long will it take for the decay…

A: First, the rate constant value is determined by using the given half life period.

Q: The half-life of carbon-14 is 5,730 years. Write the exponential decay function and find k. If the…

A: Half life:It is represented by the symbol t1/2. It was discovered by Rutherford. It is defined as…

Q: The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain…

A: We are given Radium -226 t1/2=1590 years                  (i) We know radioactive decay always…

Q: 1.50 moles of a radio nuclide emits 3.09 x 1010 beta particles per second. assumed that each beta…

A: Here 1.5 moles of radio active nuclide emits 3.09×10^10 beta particles per second. We have to…

Q: A sample of F-18 has an initial decay rate of 1.5 x 10° dis/s. How long will it take for the decay…

A: When an atomic nucleus breaks down by itself that results in the release of energy and matter, such…

Q: The Q value for the alpha decay of Tl203 is calculated to be 0.91 MeV from the masses of the initial…

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Q: After 31 years, what mass (in g) remains of a 45.0 g sample of a radioactive isotope with a…

A: Given, Half life (t1/2 )= 7.3 years time (t) = 31 years Number of radioactive atoms present…

Q: Plutonium-236 is an alpha emitter with a half-life of 2.86 years. How long will it take for the 1.20…

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Q: If 2.7 * 10−10% of the atoms of a radioactive isotope disintegrate in 1.0 yr, what is the decay…

A: The radioactive decay follows first-order kinetics. For the first-order kinetic the rate constant is…

Q: . A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were produced.…

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Q: Fluorine-21 has a half life of approximately 5 seconds. What percent of the original nuclei would…

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Q: A certain radioactive nuclide has a half life of 1.00 hour(s). Calculate the rate constant for this…

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Q: Vhat is the half-life of a radioisotop

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Q: Iodine-131 is an important radioisotope of iodine that has a radioactive decay half-life and is…

A: Radioactive decay follows first order rate law, we can mathematically expressed it as At = Ao…

Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: Nuclear reactions or nuclear decay follows first order kinetics. Given: Half life t1/2 = 150.…

Q: Radiocarbon dating techniques are used to determine that a very old piece of bone emits emits about…

A:

Q: What is the half‑life of an isotope that decays to 3.125%3.125% of its original activity in 41.8 h?

A: All radioactive decay follows first order kinetics. The half-life t1/2 of the radioactive decay is…

Q: A radioactive isotope has a half-life of 84.5 minutes. How long will it take for the radiation from…

A: Half life t1/2 = 84.5 min = 5070 s

Q: Q3 Radium-224 decays through the pathway a, a, a, ß, a, ß. What intermediates are formed in this…

A: Radioactive decay is the process of breakdown of radioactive nuclei to smaller nucleii till it is…

Q: The isotope 261-Lr decays by a emission with a half-life of 2.7 min. How many minutes will it take…

A: As we know the Decay equation: λ=1tlnaoa a0= Initial concentration a= Concentration left after time…

Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 23.8 days decay…

A: Since you have asked multiple questions we will solve only the 1st one for you. If you want an…

Q: Radiocarbon dating techniques are used to determine that a very old piece of bone emits emits about…

A: Calculate the number of half lives which have been involved in the degradation. If n is the number…

Q: If the half-life of a 2.0 gram sample of a radionuclide is 15 hours, then the half-life of a 1.0…

A: Given: Initial mass of sample = 2.0 g. Half-life of sample = 15 hours. And final mass of sample =…

Q: The slope of a graph for some measurements of decay rate of a sample of 1281, a radionuclide often…

A: Radioactive decay obeys first-order kinetics.

Q: How many half lives must have passed for an isotope with a half life of 10 years to decay from 1600…

A: The radioactive decay follows the First Order kinetics.