Answered: For the alpha decay 238U → 234Th + 4He,…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter31: Radioactivity And Nuclear Physics

Section: Chapter Questions

Problem 79PE: (a) Write the decay equation for the decay of 235U. (b) What energy is released in this decay? The...

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For the alpha decay ²³⁸U → ²³⁴Th + ⁴He, the mass values for ²³⁸U, ⁴He and ²³⁴Th are 238.0508u, 4.0026u and 234.0436u respectively. How much energy is released in this reaction? (This energy, also called the decay energy, comes from the fact that ²³⁸U mass is bigger than the combined masses of ⁴He and ²³⁴Th. The lost mass is converted to released energy in the decay process.)

a) 4.285 MeV

b) 0.0046 MeV

c) 6.87*10^-19 J

d) none of these.

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