B3. In the alpha decay of uranium 233U-228Th + He, how much kinetic energy (in MeV) will the thorium atom have. Given that Q 6.46 MeV and the atomic mass of 228Th is 228.028731u. Express the values to 3 significant figures, if necessary.
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- A nucleus of 238 Np captures a thermal neutron to form a nucleus of 239 Np . What is the excitation energy ( to 1 dp ) in MeV for this process ?Uranium-235 is used as a nuclear fuel for Canadian made CANDU nuclear power plants. During one such fission reaction, a uranium-235 atom is split by a fast moving neutron to produce krypton-92, barium-141 and an unknown number of neutrons. Determine the number of neutrons produced by this reaction, record that value in blank #1. Determine the energy released by the reaction, rounded to the nearest whole MeV, record that in blank #2. Isotope Uranium-235 Krypton-92 Barium-141 Neutron Mass (u) 235.043930 91.92345 140.91440 1.0086651 Radioactive decay Consider a chain of radioactive decays 1-2-3, where nuclei of type 3 are stable. We assume that we begin with No atoms of the parents at t= 0 and no atoms of the decay products are originally present. The decays constants are represented by A₁, A2. a) Compute N₁ (t) b) Compute N₂(1) c) Compute N₁ (1) d) Compute N₁ (t) + N₂(t) + Na(t) and interpret. e) Plot N₁ (t), N₂(t), and N₁(e) approximately and interpret them at small t and too
- a) Nuclear fusion reactions power the Sun and other stars. i) Explain what is meant by the term fusion when describing a nuclear reaction. ii) In stars, the proton-proton reaction dominates. The first step is 2H → D+e+Q. Given the masses 1.00784 amu for hydrogen, 2.01410 amu for deuterium and 0.00055 amu for an electron, calculate the energy Q released, giving your answer in amu. [5 marks]H.W 2 A tiny piece of paper (produced from formerly living plant matter) taken from the Dead Sea Scrolls has ar activity of 10.8 disintegrations per minute per gram of carbon. If the initial C-14 activity was 13.6 disintegrations/min/g of C, estimate the age of the Dead Sea Scrolls.What is the the total binding energy of 6 28 Ni. It isotope mass is 59.930786 u. The mass of a neutron is 1.008665 u and the mass of H is 1.007825 u. a. О b. 526.9 MeV С. 0.565594 u d. 8.781 MeV O e. 59.930786 u
- Learning Goal: Radioactive decay - Half-life N 1,000,000 500,000 250,000 125,000 62,500 Number of nuclides, N x 10³ 1000 750 500 250 125 0 Time 0 the 2012 3h2 4112 5h2 612 7h2 8h2 9412 10₁2 31,250 15,625 he 2h 3h 4h 5h 6h 7he 8he 9h 10h Time in multiples of f 7,813 3,906 1,953 977 A radioactive sample's half-life is 30.2 years. 1 year = 365 days, 1 day = 24 hours, 1 hour = 60 min, 1 min = 60 sHis case. ewent 5. A radioactive isotope, Selenium, used in the creation of medical images of the pancreas, has a half-life of 119.77 days. If 100 milligrams are given to a patient, how many milligrams are left after 20 days?Part A Some atomic masses Particle Symbol Mass (u) Electron e 0.00055 Part B Proton р 1.00728 Neutron n 1.00866 Part C Hydrogen 'H 1.00783 Helium 4He 4.00260 Part D Calculate the mass defect of the helium nucleus He. The mass of neutral He is given by MHe = 4.002603 u. Express your answer in atomic mass units to three significant figures. · View Available Hint(s) ? u