1. Naturally occuring boron consists of 80.22% 11B (nuclidic mass = 11.009) and 19.78% another isotope. To account for the atomic mass, 10.810, what must be the nuclidic mass of the other isotope?

Q: The activity of a particular radioactive nuclide falls from 1 × 1011 Bq to 2 × 1010 Bq in 10 hours.…

A: Calculate the decay constant of the radioactive nuclei. A=A0e-λt2×1010 Bq=1×1011 Bq×e-λ×10 he-λ×10…

Q: From the following numbers of protons and neutrons in the nucleus, choose the symbol for the…

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Q: 8..At-219 is a nuclide produced during the decay of U-235, and At-219 in nature is estimated to be…

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Q: Examples Identify the unknown nuclide or particle (X). • (a) X → Ni+y • (b) 215Po X + a . → • . (C)…

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

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: 5. How many nuclei of 238 U remain in a rock if the activity registers 270 decays per second? (Note…

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Q: A) Calculate the binding energy per nucleon of helium (He,) assuming its atomic weight = 4.0026025…

A: Part 1 ... In He there are 2 protons and (4-2) = 2 neutrons. Now mass of proton = mp =1.0072764 amu…

Q: 2. Consider a radioactive substance with a half-life of H = 25 days. Suppose mo = 50 mg is the…

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Q: 40. Balance the following equation: 239- Th 90 239 U 239 94 2381 94 Pu 239 93

A: Given data:  N93239p → .....+ e-10 Required: Balance the equation

Q: if you started with a parent isotope with 100% of its atoms and its half-life is 10 years. What is…

A: Given. t/T = 2 N(t) = No(1/2)t/T

Q: 1. Calculate the average binding energy per nucleon for Cobalt, Co (atomic mass= MeV 58.933198 u).

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Q: Consider the nuclear reaction H+NX+B where X is a nuclide. What are Z and A for the nuclide X? VE…

A: Part(A) What are Z and A for the nuclide X. part(B) Calculate the reaction energy Q (in MeV) Given,…

Q: Q2: - Radioactive carbon 14 sample contain 2x10"nuclie initially and its half-life is 5730 years,…

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Q: 6. The radioactive isotope (191 Pt) has a half-life of 2.86 days. A sample containing this isotope…

A: Given, The half-life of radioactive, t1/2=2.86days Initial activity, A0=4.5×108Bq The decay…

Q: A radioactive isotope has an activity of 9.27x104 Bq initially. After 3.30 hours the activity is…

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Q: Q1(i). The half-life of 20kg of Bismuth-210 is 20 minutes. Explain this statement.  (ii). A…

A: (i) Given: Mass of Bi-210 is 20kg. The half life is 20min. Explanation: Half life is the time…

Q: 3. Decay of a radioactive material takes place according to the data given in Table 2. Find the…

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Q: v) Check Question 5: Radioactivity (See textbook Chapter 6 - Exercise 4) Natural uranium is a…

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Q: Determine the nuclear composition of the following isotopes:' for example Carbon-12 has 6 protons…

A: To determine nuclear composition of given isotopes.

Q: 9. Calculate the binding energy per nucleon (in units of MeV) for Be, for which the atomic mass is…

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Q: 3. A sample of a radioactive isotope is found to have an activity of 115.0 Bq immediately after it…

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Q: 5. B-10 (D.p) reaction. Identify the: Daughter nuclide: 1. Reaction Equation: 2. 1°C "C 1°C B+ B+…

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Q: Tritium has a half-life of 12.5 y against beta decay. Determine fraction of a sample which will…

A: (1) We have given Th=12.5 years Here Th= half life We know that NNo=12tTh NNo=122512.5=122=14 N=No/4…

Q: 1. The decay of radioactive substance is given by -t T N = Nᵒe (1), where N is the number of atoms…

A: You are using incorrect symbol for Tau (decay constant).

Q: 1. An ancient club is found that contains 120 g of pure carbon and has an activity of 7.5 decays per…

A: The expression for the half-life of carbon-14 is written as, Here, λ represents the decay constant…

Q: . The decay constant of lodine-123 is 1.34 x 10-5 s-1. What is its half-life and how long will it…

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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 stable nuclide, after absorbing a neutron emits an electron and the new nuclide splits…

A: Scenario - A nuclei after absorbing a neutron, splits into 3 α particles and an electron. Let…

Q: "Na is an unstable nucleus that will decay to become neon, Ne . What particles have to be created…

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Q: 29) Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount…

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Q: . Calculate the average binding energy per nucleon for Vanadium, V (atomic mass = 50.943962 u). MeV

A: Write a given values of this question. atomic mass=50.943962amu  V2351 has 23 electron, 23 protons…

Q: 5. Calculate the density of Ag-108, given Ro= 1.22 fm and mass of a nucleon = 1.67 X 10-27 kg.

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Q: 24. A radioactive element X decay to a radioactive element Y which then decay to an elemen Z. If…

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Q: Uranium-235 (2U) undergoes a series of alpha and beta decays in this succession: a, 2B, 5a, 2B, and…

A: Alpha Decay Alpha particle contains two protons and two neutrons, after an alpha emission the parent…

Q: 4. An ancient club is found that contains 150 g of pure carbon and has an activity of 4 decays per…

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Q: An unknown isotope has an atomic number, Z = 15 and atomic mass number, A = 32. It decays via beta…

A: Given: The atomic number of an isotope is Z=15. The atomic mass number of an isotope is A=32. The…

Q: 235U is radioactive, with a long half-life of 704 million years. The decay products of a 235U…

A: 235U92 has the half-life of 704 million years. But decay products of 235U92 have half-lives of a few…

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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