SUSTAINABLE ENERGY (LL)
2nd Edition
ISBN: 9780357667224
Author: DUNLAP
Publisher: CENGAGE L
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Chapter 6, Problem 4P
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- 137Cs is a typical long-lived waste product from fission reactors. Beginning with the fission process: n + 235U → 236U → 137I + 95Y + 4n. explain how 137Cs is produced.arrow_forwardQuestion 1 An atom in the ground state O has all electrons in the n 1 orbit O has all electrons in the lowest energy orbits possible O is finely divided O will not absorb electromagnetik radiation of any wavelength Question 2 Which of the following transitions in the Bohr hydrogen atom model affords emission of the highest-energy photon? (R, = 2.18 x 10 1ª j) Oni-6 1 O ni-1+nf-6arrow_forwardThorium- 231 is the product of alpha emission. It is radioactive and emits beta radiation. Determine (a) the parent nucleus of Th-231. (b) the daughter product of Th-231 decay.arrow_forward
- At time t = 0 a sample contains 3.57 108 nuclei of a particular nuclide. Exactly one year later the sample contains 3.09 108 nuclei of the same species. Calculate the half-life of the decay.arrow_forwardNuclide A has a half-life of 4 days, and nuclide B has a half-life of 16 days. At the beginning of an experiment, a sample contains 218 nuclei of nuclide A and 212 nuclei of nuclide B. How long will it take before the numbers of nuclei of the two nuclides are equal?arrow_forwardIn order for a reaction between two molecules to occur, the molecules must [Check all that are required.] collide approach each other at the right angle or orientation O have enough energy be the same sizearrow_forward
- Determine the number of protons and neutrons in each isotope Na 11 protons, 12 neutrons O 12 protons, 12 neutrons 12 protons, 10 neutrons 11 protons, 11 neutronsarrow_forwardConvert the following species from mg/L as the ion to mg/L as CaCO3 83 mg/L Ca2+ 48 mg/L CO2 220 mg/L HCO3- 15 mg/L CO32-arrow_forwardFor the solidification of iron, calculate the critical radius r* and the activation free energy ΔG* if nucleation is homogeneous. Values for the latent heat of fusion and surface free energy are –1.85 × 109 J/m3 and 0.204 J/m2, respectively. Use the supercooling value ΔT = 291 K, and the melting point of iron is 1538°C. Calculate the number of atoms found in a nucleus of critical size. Assume a lattice parameter of 0.292 nm for solid iron at its melting temperature.arrow_forward
- For the solidification of iron, calculate the critical radius r* and the activation free energy AG* if nucleation is homogeneous. Values for the latent heat of fusion and surface free energy are -1.85 x 10° J/m³ and 0.204 J/m?, respectively. Use the supercooling value AT = 291 K, and the melting point of iron is 1538°C. Calculate the number of atoms found in a nucleus of critical size. Assume a lattice parameter of 0.292 nm for solid iron at its melting temperature.arrow_forwardThe activation energy of the gas-phase reaction OH(g) + HCl(g) → H2O(g) + Cl(g) is 3.5 kJ mol¯1, and the change in the internal energy in the reaction is AU = -66.8 kJ mol¬1. Calculate the activa- tion energy of the reaction H2O(g) + Cl(g) → OH(g) + HCI(g)arrow_forward1. Give the number of protons, the number of neutrons, and the neutron-to-proton ratio for each isotope. a. iron-57 b. 185W r notassium-39arrow_forward
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