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Is this reaction exoergic or endoergic? What energy does it require or give off? (Known as the Q value) 197 79 Au( , d) 199 80 Hg 197 79 Au =196.966552.

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Presentation on theme: "Is this reaction exoergic or endoergic? What energy does it require or give off? (Known as the Q value) 197 79 Au( , d) 199 80 Hg 197 79 Au =196.966552."— Presentation transcript:

1 Is this reaction exoergic or endoergic? What energy does it require or give off? (Known as the Q value) 197 79 Au( , d) 199 80 Hg 197 79 Au =196.966552  = He = 4.002603 199 80 Hg =198.968262 d = 2 H = 2.014102 Q = -12.30 MeV (Endo)

2 Q = +0.529 MeV (Exo) Try this reaction - is it endo or exo, and how much? 40 19 K(p, n) 40 20 Ca 40 19 K = 39.9639987 p = H = 1.007825 40 20 Ca = 39.9625912 n = 1.008665

3 Q = +8.611MeV (Exo) Try this reaction - is it endo or exo, and how much? 137 56 Ba(n,  ) 138 56 Ba 137 56 Ba = 136.905821 n = 1.008665 138 56 Ba = 137.9052413  = ??


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