heat of for·ma·tion

the heat (expressed in calories or joules) absorbed or liberated during the (hypothetic) reaction in which a mole of a compound is formed from the necessary elements, in elemental form.

Farlex Partner Medical Dictionary © Farlex 2012

References in periodicals archive

Where, "DRE", "[chi]", "[DELTA][H.sub.f]" and "[N.sub.H]" are Dewar resonance energy, Randic index, heat of formation for the reference structure, the number hydrogen atoms in polyenes (I), respectively.

Quantitative structural relationship between Randic indices, adjacency matrixes, distance matrixes and Dewar resonance energy of linear simple conjugated polyene compounds

The heat of formation ([DELTA][H.sub.f]) was positive for all complexes and it was observed that proposals 3 to 6 had a reduction in the average values, indicating a lower energy demand for complex formation.

Computational Studies of Fullerene Derivatives as Pesticide Captors

Brown dwarfs glow brightly when young, from the heat of formation, but cool down over time and end up with atmospheres that exhibit planet-like characteristics.

Over 2 dozen new free-floating 'failed stars' discovered

All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.