a) Determine the binding energies of the following nuclides: ?H, ³He, and 4He.
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Please help. This problem involves finding the binding energy of various isotopes of Hydrogen and Helium. Thank you.
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- in the stable isotope of Potassium 39K there are 19 electrons, 19 protons and 20 neutrons. The mass of the neutral atom is 38.96371 u. Calculate: Total mass / u Mass defect / u Binding energy / J Binding energy / MeV Mass of the proton = 1.007276 u Mass of the neutron = 1.008665 uSearch (Alt+Q) Pau References Mailings Review View Help There are three naturally occurring stable isotopes of magnesium: 24MB, 25Mg, and 2°Mg, which have relative abundances on Earth of 79%, 10%, and 11% respectively. Note that the atomic number of magnesium is 12. a) Calculate the binding energy (in eV) of magnesium-24, which has an atomic mass of 23.9850 AMU. The mass of a neutron is 1.0087 amu and the mass of a proton is 1.0073 amu. Using your results from parts (i) and (ii) discuss how the nucleus is held together. b) The radioisotope of magnesium with the longest half-life is magnesium-28, with a half-life of 20.9 hrs. Magnesium-28 decays through B- decay into aluminium-28. With reference to fundamental particles, describe the process which occurs in beta minus decay. Hence determine the equation for the decay of magnesium-28 into aluminum-28.Elements that appear in the same column of the periodic table often share similar chemical properties. For alkaline earth metals, this is troublesome because the body treats radium (a radioactive element) like calcium, storing it in the bone marrow. The radium then bombards nearby bone cells with alpha particles, causing them to "crumble." Radium poisoning investigations often center on the identification of radium and its isotopes in bone samples using a mass spectrometer. Pictured is a schematic of a simplified mass spectrometer that shows the paths of calcium isotopes, barium (another alkaline earth metal) isotopes, and radium isotopes entering the chamber. +++++++++ lonized Detector B C D E F G Using the data shown in the table, calculate the path radius r of the Ca ion. Using the same data table, match the particles to their path label. The region shown is immersed in a constant magnetic field of 0.352 T pointing out of the plane of the schematic. Motion of the positively-charged…
- Scientists can determine the age of ancient objects by the method of radiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope of carbon, 14C, with a half-life of about 5730 years. Vegetation absorbs carbon dioxide through the atmosphere and animal life assimilates ¹4C through food chains. When a plant or animal dies, it stops replacing its carbon and the amount of 14C begins to decrease through radioactive decay. Therefore the level of radioactivity must also decay exponentially. A parchment fragment was discovered that had about 75% as much 14C radioactivity as does plant material on earth today. Estimate the age of the parchment. (Round your answer to the nearest whole number.) yr Need Help? Watch It Additional Materials THERA fusion reaction that has been considered as a source of energy is the absorption of a proton by a boron-11 nucleus to produce three alpha particles: 1/1H + 11/5B → 3(4/2He)This reaction is an attractive possibility because boron is easily obtained from the Earth’s crust. A disadvantage is that the protons and boron nuclei must have large kinetic energies for the reaction to take place. This requirement contrasts with the initiation of uranium fission by slow neutrons. (a) How much energy is released in each reaction? (b) Why must the reactant particles have high kinetic energies?Find the binding energy (in MeV) for lithium 3Li8 (atomic mass = 8.022486 u). Number i Units
- 5 Answer the following questions: a) For a homogeneous nucleation process, sketch the dependence of the surface and bulk free energies on the radius of a spherical embryo using the equation below. kT AG, = 4rv*y -* inS V, AG > r b) Sketch the dependence of the free energy changes (AG,) on the radius of a spherical embryo when the supersaturation ratio (S) is greater than 1, equal to 1 and less than 1. AG c) Discuss the importance of supersaturation on precipitationCan you please help me with this question? Thank you so much!C Exercise 29.23 Part A Calculate the time required for a sample of radioactive tritium to lose 79.0 % of its activity. (Tritium has a half-life of 12.3 years.) V t = 28.6 Submit ΑΣΦ Provide Feedback Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Review your calculations and make sure you round to 3 significant figures in the last step. H ? Q Search years P Pearson W
- The two nuclei in the nitric oxide (NO) molecule are 0.1154 nm apart. The mass of the most common nitrogen atom is 2.326 * 10-26 kg, and the mass of the most common oxygen atom is 2.656 * 10-26 kg. Find the reduced mass of the NO molecule.a.) Calculate the wavelength and energy of the photon emitted in the decay ni=4 to nf=3 for the Li+2 ion. Show calculation. b.) Provide a written explanation for why the value calculated above is different from the value for the same ni and nf values for hydrogen. c.) What is the frequency of energy needed to excite a hydrogen electron from n=1 to n=4? Show calculation.A periodic table might list the average atomic mass of magnesium as being 24.312 u, which is the result of weighting the atomic masses of the magnesium isotopes according to their natural abundances on Earth.The three isotopes and their masses are 24Mg (23.985 04 u), 25Mg (24.985 84 u), and 26Mg (25.982 59 u). The natural abundance of 24Mg is 78.99% by mass (that is, 78.99% of the mass of a naturally occurring sample of magnesium is due to the presence of 24Mg).What is the abundance of (a) 25Mg and (b) 26Mg?