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Using Hess' Law, What Is ΔH°rxn at 25°C for the Following

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Using Hess' law, what is ΔH°rxn at 25°C for the following reaction? ClF(g) + F2(g) → ClF3(g) Using Hess' law, what is ΔH°<sub>rxn </sub>at 25°C for the following reaction? ClF(g)  + F<sub>2</sub>(g)  → ClF<sub>3</sub>(g)    A)  -217.5 kJ/mol B)  -130.2 kJ/mol C)  217.5 kJ/mol D)  -108.7 kJ/mol E)  465.4 kJ/mol

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