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chm1046 Exam 3 Extra Credit

chm1046 Exam 3 Extra Credit - d How does the energy content...

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Read Sections 19.5-19.7 of your Textbook in order to answer the questions below: 1. One of the hopes for solving the world's energy problem is to make use of the fusion reaction: H + H He + n + energy How much energy is released when one mole of deuterium is fused with one mole of tritium according to the above reaction? The masses of the atoms and the neutrons are: H = 2.0140 amu H = 3.01605 amu He = 4.002603 amu n = 1.008665 amu 2. Calculate E in kilojoules per mole for the following reaction: Th He + Ra Atomic masses: 230 Th = 230.0332, 4 He = 4.00260, 226 Ra = 226.02544. 3. If one mole of oxygen-16 were formed from protons and neutrons, 0.1366 g of mass would be lost. What happens to the “lost” mass? 4. a) What nuclide is necessary to balance the following fission reaction? U + n 3n + Ba + __________ b) When was this nuclear fission reaction first observed? c) How much energy is released each time this reaction occurs?
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Unformatted text preview: d) How does the energy content for fission of U compare to the energy released by the combustion of methane? 5. Breeder reactors are used to convert the nonfissionable nuclide U to a fissionable product. Neutron capture of the U is followed by two successive beta decays. What is the final fissionable product? 6. The smallest amount of radioactive material that will support a self-sustained fission reaction is called the: 7. If more than one neutron from each fission event causes another fission event, the fission situation is described as: 8. What component of a nuclear reactor moderates the rate of the reaction? 9. The greatest radiation exposure for Americans comes from: 10. Which unit takes into account the relative ability of radiation to cause damage? 11. Which type of radiation has the lowest penetrating ability?...
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