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CRS Question, 6–24
ANSWER
Choice 3 is the answer when the three given
equations are properly arranged. The arrangement that, when added, yields the
desired equation is: reverse the first given equation, double the next
one, and finally take ½ and reverse the third
equation. Each manipulation should
be done to the respective DH
values before tallying those to yield the final DH value.
Section
6.3: Hess’s Law