(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Consider the fission reaction in which 236U92 breaks up into 141Ba56 and 3 neutrons and an unknown fragment. Which of the following statements are true about this fission reaction in particular and nuclear reaction energies in general? You are given a plot of the binding energy (BE) per nucleon to help you.

http://aycu17.webshots.com/image/25736/2004649007142429776_rs.jpg

TrueFalse the unknown fission fragment will have Z = 33

TrueFalse the unknown fission fragment will have A = 95

TrueFalsea heavy nucleus (like uranium) can become more stable via a reaction that moves it back to the left on the BE curve

TrueFalsea heavy nucleus (like uranium) releases less energy in a single fission reaction than in one alpha decay

TrueFalsethe fission products (two fragments plus 3 neutrons) have less total mass than the original 236U

3. The attempt at a solution

1. Z= Atomic Mass so true; must be equal before and after the equation

2. A= Atomic # so true; must be equal before and after the equation

3. Not sure, i thikn its false because of the graph, not sure about this one

4. Also not sure about this, but believe false, because it has alpha decay.

5. The total mass must be equal before and after the reaction

My answers are in bold, and above are my reasons, i cant figure out what im doing wrong. Can anyone help?

Thanks

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# Homework Help: Binding Energy Concepts

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