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Question
Can you answer number 3?
1. (a) Calculate the energy release in MeV of gasoline per molecule of n-heptane burned. The molecular mass of n-heptane is 100 u, and it releases energy at a rate of 4.8 x 10' J/kg. (b) Calculate the ratio of energy released by one uranium-nucleus fission (approximately 200 MeV) and one n-heptane molecule combustion. 2. Estimate the number of "U fission reactions per second in a nuclear power plant that produces 1000 MW of electricity and 2000 MW of waste heat. 3. A series of reactions on the sun leads to the combination of three helium nuclei (* 2He) to (:), 16 (a) Calculate the net energy released by the reactions. (b) form one carbon nucleus What fraction of the total mass of the three helium nuclei is converted to energy?* 4. Show that the following reactions are forbidden by the conservation of charge and/or baryon A" →p+e +v, +n; number laws:
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Transcribed Image Text:1. (a) Calculate the energy release in MeV of gasoline per molecule of n-heptane burned. The molecular mass of n-heptane is 100 u, and it releases energy at a rate of 4.8 x 10' J/kg. (b) Calculate the ratio of energy released by one uranium-nucleus fission (approximately 200 MeV) and one n-heptane molecule combustion. 2. Estimate the number of "U fission reactions per second in a nuclear power plant that produces 1000 MW of electricity and 2000 MW of waste heat. 3. A series of reactions on the sun leads to the combination of three helium nuclei (* 2He) to (:), 16 (a) Calculate the net energy released by the reactions. (b) form one carbon nucleus What fraction of the total mass of the three helium nuclei is converted to energy?* 4. Show that the following reactions are forbidden by the conservation of charge and/or baryon A" →p+e +v, +n; number laws:
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Calculation of mass value :
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a.) The net energy released by the reaction :
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b.) The fraction of the total mass of the three helium nuclei is converted to energy :
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