a) 18,9F is observed to decay by emitting a + particle. Write out the decay proc

ID: 2309834 • Letter: A

Question

a) 18,9F is observed to decay by emitting a + particle. Write out the decay process for this nucleus.

Express your answer as a nuclear equation.

b)Determine the energy released in reaction. Be sure to take into account the mass of the electrons associated with the neutral atoms.

Express your answer using three significant figures.

c) 22,11Na is observed to decay by emitting a + particle. Write out the decay process for this nucleus.

Express your answer as a nuclear equation

d) Determine the energy released in reaction. Be sure to take into account the mass of the electrons associated with the neutral atoms.

Express your answer using four significant figures

change in mass in the rxn 18,9 F -> 18,8 ) + e+ + nu

=> dm = 18.998403 - 17.999160 - 0.0005485 - 0.0005485

=> dm = 0.9981

energy released = dmc^2 = 0.9981*931.5 = 930 MeV

b) 22,11 Na -> 22,10 ) + e+ + nu

dm = 21.994434 - 21.991383 - 0.0005485 - 0.0005485

dm = 0.001954

=> E = 0.001954*931 = 1.82 MeV

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