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Topic 6.9 · Hess’s Law

11 MCQ questions available in this scope.

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AP Chemistry · Topic 6.9: Hess’s LawOpen topic

Practice question

Original PrepAtlas question. This is not an official College Board question.

At matched constant-pressure conditions, A → B has ΔH = +30.0 kJ and B → C has ΔH = −50.0 kJ for their stated amounts. What is ΔH for the summed transformation A → C?
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