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| Sections | |||
|---|---|---|---|
| Radioactive Decay | 42 mins | 0 completed | Learn |
| Band of Stability | 22 mins | 0 completed | Learn |
| Magic Numbers | 10 mins | 0 completed | Learn |
| First Order Half Life | 19 mins | 0 completed | Learn |
| Additional Practice |
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| Alpha Decay |
| Beta Decay |
| Gamma Emission |
| Electron Capture |
| Positron Emission |
| Nuclear Fission |
| Mass Defect |
| Nuclear Fusion |
| Nuclear Transmutation |
Calculate the energy change when one 238U nucleus undergoes the reaction:
238U + n → 239Pu + 2β
The masses needed are 238U, 238.0508 amu; 239Pu, 239.0522 amu; n, 1.0087 amu.
a) -1.1 x 10-12 J
b) -1.5 x 10-10 J
c) -4.5 x 10-10 J
d) +1.5 x 10-12 J
e) +3.0 x 10-10 J
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