Although internal energy (E) is more fundamental and conceptually easier than enthalpy (H), in most chemical applications $\Delta$H is more relevant and useful than $\Delta$E. Why?

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The Answer of Although internal energy (E) is more fundamental and conceptually easier than enthalpy (H), in most chemical applications $\Delta$H is more relevant and useful than $\Delta$E. Why?

Although Internal Energy (E) Is More Fundamental and Conceptually Easier Δ\DeltaΔ

Although Internal Energy (E) Is More Fundamental and Conceptually Easier $\Delta$