Multiple Choice
When a stationary plutonium-239, 
Pu,decays into uranium-235 plus an alpha particle,the energy released in the process is 5.24 MeV.The following masses are known: 
He: 4.002603 u 
U: 235.043924 u
What is the mass of the 
Pu nucleus,in amu? (1 u = 931.494 MeV/c2)
A) 239.05215 u
B) 239.02775 u
C) 239.00189 u
D) 238.99919 u
E) 238.98884 u
Correct Answer:

Verified
Correct Answer:
Verified
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