Energy released in the fission of one uranium-235 nucleus? (extra neutron)

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The discussion centers on the energy released during the fission of one uranium-235 nucleus, with a calculated value of 4.73×10^-11 joules. Participants reference Einstein's equation, E=mc², to explain the energy-mass relationship. There is a focus on the importance of significant figures in calculations, emphasizing that the final answer should reflect the precision of the input values. The conversation also highlights the need to find the mass difference before calculating energy, adhering to proper scientific methodology. Overall, the thread underscores the significance of accurate calculations in nuclear physics.
mccarthyp64
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1. How much energy is released during the
fission of one uranium-235 nucleus?



2. e=mc2 lol :smile:



3. I thought of putting them together but then how to separate them?
1.67495×10-27+3.903 05×10–25×c2=1.7539207313048996244767495×10-7



By the way, the answer is 4.73×10-11
 

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mccarthyp64 said:
1. How much energy is released during the
fission of one uranium-235 nucleus?
2. e=mc2 lol :smile:
3. I thought of putting them together but then how to separate them?
What are "them"?

1.67495×10-27+3.903 05×10–25×c2=1.7539207313048996244767495×10-7
If you start using six significant figures, it is silly to have more than six in your answer. And since you are adding two quantities of different orders of magnitude, you should have even fewer. Your answer also needs to have units.

Solve the problem by doing exactly what the problem says to do: find the mass difference, then find the energy.
 
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