13 The isotope N has a half-life of 9.96
Q: Strontium is chemically similar to calcium and can replace calcium in bones. The radiation from 90Sr…
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Q: 232 Th 228. Th + xa + yB 06 90 A Thorium (Th) decays by emitting x alpha particles and y beta…
A: Given: A decay reaction of Thorium. In that x alpha and y beta particles are emitted.
Q: A 44.5 g sample of carbon has an activity of 8.55 decays per second. How old is it? Please give your…
A: Given data The mass of the sample of carbon is given as m = 44.5 kg. The number of decays is given…
Q: 1. Calculate the binding energy (in MeV) per nucleon for an a-particle (He nucleus), given that the…
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Q: Bismuth, 214Bi decays by alpha decay with a half-life of 19.7 minutes. What is its decay constant?…
A: Formula of half-life of radio active element is as follows: T12=0.693λ…
Q: A piece of bark is made up of carbon. It emits 7000 electrons per minute. Only the carbon 14 isotope…
A: number of electrons per minute = 7000 isotopic abundace of C-14 = 1.3×10-12
Q: A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This…
A: The age of the rock is 1.36 x 10¹⁰ years
Q: A 5000-Ci 60Co source used for cancer therapy is considered too weak to be useful when its activity…
A: Basic Details The ratio of the activity depends on the decay constant and the time taken.
Q: 6. The bismuth-209 nucleus has a binding energy per nucleon of 7.6154 MeV. (1 MeV is 1.60 × 10-13…
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Q: What is the mass of 1ci of 227TH? If the half-life is 1.90 years. O m = 1.11x 10-2g O m = 1.21x…
A: T1/2 = 1620 years = 1620 x 3.15 x 107s λ = 0.693/ T1/2 = 0.693/(1620 x 3.15 x 107 s)
Q: An 1 g sample of a radioactive element takes 83.92 million years to reduce into 1 µg. Calculate the…
A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…
Q: Strontium is chemically similar to calcium and can replace calcium in bones. The radiation from ⁹⁰Sr…
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Q: 190- Some nucleus of ¹9X (atomic mass = 189.96182 u) undergoes decay to become (atomic mass =…
A: The mass of the parent nucleus is 189.96182 u. The mass of the daughter nucleus is 189.95844 u.
Q: The cadmium isotope 109Cd has a half-life of 462 days. A sample begins with 1.0 × 1012 109Cd atoms.…
A: According to the relation, N=N0etτ N0 is the initial number of Cd atoms, N is the number of atoms…
Q: 11. The half-life of Uranium-237 is 5.83 x 105 seconds. What is the decay constant?
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Q: A pure sample of 226 Ra contains 2.0 x 10^14 atoms of the isotope. If the half life of. 226 Ra = 1.6…
A: Given that, No. of atoms of a pure sample of 226 Ra is 2.0 x 1014 atoms. The half-life of the sample…
Q: he isotope neptunium-229 ( 229 93Np) undergoes alpha (4 2He) decay. Write the reaction equation and…
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Q: radioactive sample initially undergoes 12.0×10^4 decays/s. Twenty-four hours later, its activity is…
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Q: A radioactive sample containing approximately 6.52×10¹3 radioactive nuclides has a half-life of 5730…
A: Radioactive nuclides are those nuclides that are unstable. This happens due to the mismatch between…
Q: An 10 g sample of a radioactive element takes 5432.6 years to reduce into 1 g. Calculate the…
A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…
Q: The radioactive isotope (183-Ta) has a half life of 5.11 days. A sample containing the isotope as an…
A: Given data: Half-life t12=5.11 days Initial activity R0=4.5×108Bq
Q: The steps below show three of the steps in the radioactive decay chain for 232 90Th. The half-life…
A: Given: The steps below show three of the steps in the radioactive decay chain for 232 90Th. The…
Q: A specific radioactive material was measured to have an activity of 347 MBq at 7:00 A.M., what is…
A: Given: The initial activity of the radioactive material at t = 0 (7:00 A.M) is A0 = 347 MBq The…
Q: After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an…
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Q: Iodine ( A= 131, Z= 53 ) undergoes a β- decay. What is the resulting daughter nuclide?
A: Parent nuclide : Iodine A = 131 Z = 53 Decay mode = beta negative decay
Q: A sample of radioisotope has a decay constant of 9.976x10s1 and prepared with an initial activity of…
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Q: What is the the total binding energy of o 28NI. It isotope mass is 59.930786 u. The mass 60 of a…
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Q: The half-life of a radioactive isotope is known to be exactly 1 h. a) What fraction of a sample…
A: Given in question - Half-life (T) = 1 hour Solution: Step1 - Here we will understand the concept…
Q: A radioactive nuclide decays through two modes. The first mode has the branching ratio 0.79 and the…
A: According to question, parent nuclide decay in two modes, where, the branching ratio of first mode…
Q: A patient is injected 465 MBq of radioactive isotopes with a half life of 110 minutes. How much…
A: Given: Half life, T=110 min=6600 s Radioactive injected in a body, N0=465 MBq Let's find the…
Q: The nucleus O has a half-life of 122.2 s; 0 has a half-life of 26.9 s. Assume, that at some time a…
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Q: 10. The radioactive isotope (82Sr) has a half-life of 25.4 days. A sample containing this isotope…
A: Given, The half-life of radioactive elements is 25.4 days The initial activity, R=4.50×108 Bq
Q: 8. The half-life for a radioactive isotope is 4.00 × 10⁹ yr. Determine the age (in years) of a rock…
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Q: A radioactive material produces 4.386E+3 decays per minute at one time, and 7.57 h later produces…
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Q: The number of radioactive nuclei present at the start of an experiment is 5.38 x 1015. The number…
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Q: The half-life of radium-226 is 1.6 x 10 years. How long will it take for 20.0 mg of radium-226 to…
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Q: The half-life for the a decay of uranium 2U is 4.47 x 10° yr. Determine the age (in years) of a rock…
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Q: A radioactive sample has a decay of 0.2193/min. a) What is the half-life? b) If at the start of an…
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Q: Measurements on a certain isotope tell you that the decay rate decreases from 8318 decays/min to…
A: Decay rate of any nuclide at any time is directly proportional to the number of active nuclides at…
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