11. If it takes 20-hours for a radionuclide to-decay from 48,000 counts per minute to- 3,000-counts per minute, how long is one half-life of the radionuclide?

Q: atom 16. Phosphorus- 32 has a half-life of 14.3 days and is used in the treatment of 32/16 leukemia,…

A: Beta particle decay:                               A Beta particle is a high energy electron that…

Q: Consider a certain type of nucleus that has a half-life of 32 min. Calculate the time required for…

A: The radioactive decay law can be used to determine the time at which 66% nuclei are remining.

Q: A patient receives 9.0 ng of a radioisotope with a halflife of 12 h. How much will remain in the…

A: Radioactive elements are those which undergoes the spontaneous reactions (may be fusion or fission)…

Q: If the half-life of a parent material is 10 Ma, and about 88% (rounded) has decayed to daughter…

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Q: Explain what is meant by (a.) radioactivity (b.) half-Ilfe Why is it necessary to specify the…

A: a) Radioactivity is a process or phenomenon of disintegration of unstable nucleus into stable…

Q: If 1.50 gram of a 2.00-gram sample of a radioactive substance undergoes decay in 60 minutes, then…

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Q: A freshly prepared sample of a certain radioactive isotope has an activity of 10.2 mCI. After 3.70…

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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: How long will it take for each of the following radioisotopes to decrease to 0.0001% of its initial…

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Q: 1 A radioisotope has a half life of 4 days. How much of a 20-gram sample of this radioisotope…

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Q: 1. A 1 kg mass of radioactive material was left to decay in a laboratory. After 12 years, the…

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Q: A 2.00 gram radioactive substance undergoes decay.  After 60 minutes, 1.50 grams have decayed.  What…

A: Radioactive decay generally follows first-order kinetics and for first-order kinetics:…

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: A radioactive isotope decayed to 17/32 of its original mass after 60 minutes. Find the half-life of…

A: All radioactive decays follows first order kinetics . The integrated rate equation for first order…

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: Calculate the mass defect and binding energy for 13C atom.

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Q: Q5. The chart shows the mass of a decaying nuclide versus time. What is the half-life of the decay?…

A: The decay constant (k) can be determined by the following equation; k=-1tlnNN0 Here, N is the amount…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

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Q: The radioactive nuclide has a shelf-life of 17.5 hours. What mass remains from 0.0100g sample after…

A: Shelf-life of 17.5 hours, Calculate the mass remains from 0.0100 g after 24 hours.

Q: A patient receives 9.2 ng of a radioisotope with a half-life of 12 hours. How much will remain in…

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Q: A sample of technetium-99m with a mass of 4.61 ng will have decayed to how much of this radionuclide…

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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: What is the X for the nuclear reaction: 226/88 Ra--> X + an alpha particle   Could you explain…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: A sample of iodine-126 with an original mass of 15.00 mg loses 13.125 mg of the original mass of the…

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Q: The radioactive nuclide has a half-life of 5.27 years. Calculate the mass of that remains from…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

Q: A radioactive nuclide of mass number 94 has been prepared by neutron bombardment. If 4.7 µg of this…

A: Radio nuclide is nuclide which is unstable and due to its extra energy it disintegrates into new…

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 nuclide 35S decays by beta emission with a half-life of 87.1 days.(a) How many grams of 35S are…

A: The relation between the half life nad the number of nuclei,N=A(t120.6931)........1stWhere,N  =…

Q: Use the table below to answer the questions. In your own words, define half-life. b. Which isotope…

A: Since you have asked multiple questions, we will solve the first question for you as per our…

Q: Bismuth-210 is a beta emitter with a half-life of 5.0 days. If a sample contains 1.2 g of Bi-210…

A: Given data:

Q: 1. After 119 days have elapsed, 1/12 of a radioisotope sample remains undecayed. What is the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

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: Assuming that many radioactive nuclides can be consid-ered safe after 20 half-lives, how long will…

A: It is given that many nuclides can be considered safe after 20 half-lives. Given data: Half-life…

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: A 50.0g sample of nitrogen-16 takes 14.4 second to decay to a mass of 12.5G. Calculate the half life…

A: Given: The time taken by N-16 to undergo decay, t = 14.4 sec The initial amount of N-16, No = 50.0 g…

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

A: Since the decay reactions are first order. Hence half life = ln(2) / K  where K = decay constant…

Q: 214 the half-life of 3Bi is 19.7 minutes, calculate the mass of radionuclide Bi-214 if the activity…

A: Here we have to determine mass of Bi-214 nuclide and specific activity i

Q: True or false? During one half-life, the mass of a radioisotope is reduced by half. Explain.

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Q: A radioactive sample contains 3.81 × 108 atoms of a nuclide that decays at a rate of 3.75 × 1013…

A: Activity depends on no.of particles of disintegrating nuclei and is expressed as, All radioactive…

Q: After 103 days, only 2.3 g of a radioisotope remains from a sample that originally has 150 g of it.…

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Q: the half life of molybdenum -99 is 67 hr. a 200 ug quantity decays, over time, to 25 ug. how much…

A: Here given, Initial amount (N0) = 200 ug Amount left undisintegrated (N) = 25 ug Half life (t1/2) =…

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: If the half-life of a radioactive isotope is 3.5 minutes, how many grams of a 200-gram sample would…

A: The interval of time required for a radioactive isotope to decay to one-half of its atomic nuclei is…

Q: How long will it take a radioactive sample of iodine-131 (half-life 8.07 d) to lose

A: The spontaneous disintegration of alpha, beta and gamma radiations by a substance irrespective of…

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: A wooden object from an archeological site is subjected to radiocarbon dating. The activity due to…

A: Since the decay reactions are first order reactions And we know that the relationship between the…

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.

Q: Differentiate a transmutation from a decay.

A: given Differentiate a transmutation from a decay.