140 is a positron emitter dec y - rays have an energy of 2.313
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![140 is a positron emitter decaying to an excited state of ¹4N. The ¹4N
y - rays have an energy of 2.313 MeV and the maximum energy of the positron
is 1.835 MeV. The mass of 14N is 14.003074 amu and that of electron is
0.000548 amu. Find the mass of ¹40 in amu.
14](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6c860780-dadd-4619-84a4-e8c6c38aa98e%2F913e0853-48ac-48fe-be76-aa791ed9847e%2Fkiwvii_processed.jpeg&w=3840&q=75)
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