Question

Two isotopes of hydrogen fuse to form a helium nucleus and a neutron:
2H + 3H -> 4He + n
The masses are:

2H:2.013553 u
3H:3.015501 u
4He:4.001506 u
n:1.008665 u


What is the Qvalue of this reaction?
A) 1.9 MeV
B) 2.5 MeV
C) 2.8 MeV
D) 17.6 MeV
E) 938 MeV

Answer

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