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Physics
Problem
A reaction is represented as
3
7
L
i
+
1
1
H
→
2
2
4
H
e
.
^7_3\mathrm{Li}+^1_1\mathrm{H}\rightarrow 2\,^4_2\mathrm{He}.
3
7
Li
+
1
1
H
→
2
2
4
He
.
Given that the calculated Q-value for this reaction is
+
17.3
MeV
+17.3\,\text{MeV}
+
17.3
MeV
, explain in one or two sentences whether the reaction is exothermic or endothermic and why.
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