Question

value: 4
____ is signified by the letter h.

a. enthalpy
b. exothermic
c. endothermic

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Explanation:

In chemistry (a subfield of Natural Science), enthalpy is a thermodynamic quantity represented by the symbol \( H \). Exothermic and endothermic refer to types of reactions (releasing or absorbing heat, respectively) and are not symbolized by \( H \).

Answer:

a. Enthalpy