Energy in Nuclear Reactions: Consider the nuclear reaction 
N + 
He ? 
O + 
H. The known atomic masses are
N: 14.003074 u
/>He: 4.002603 u
H: 1.007825 u
O: 16.999131 uWhat is the Q-value (or reaction energy) of this reaction? (1 u = 931.5 MeV/c2)
A. 1.191 MeV
B. -1.191 MeV
C. 1.279 × 10-3 MeV
D. -1.279 × 10-3 MeV
Answer: B
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