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  2. Enthalpy of atomization - Wikipedia

    en.wikipedia.org/wiki/Enthalpy_of_atomization

    Enthalpy of atomization is the amount of enthalpy change when bonds of the compound are broken and the component atoms are separated into single atoms ( or monoatom). Enthalpy of atomization is denoted by the symbol ΔH at. The enthalpy change of atomization of gaseous H 2 O is, for example, the sum of the HO–H and H–OH bond dissociation ...

  3. Enthalpy - Wikipedia

    en.wikipedia.org/wiki/Enthalpy

    Enthalpy of atomization - is defined as the enthalpy change required to separate one mole of a substance into its constituent atoms completely. Enthalpy of neutralization - is defined as the enthalpy change observed in a constituent of a thermodynamic system when one mole of water is formed when an acid and a base react.

  4. Standard enthalpy of formation - Wikipedia

    en.wikipedia.org/wiki/Standard_enthalpy_of_formation

    may be considered as the sum of several steps, each with its own enthalpy (or energy, approximately): H sub, the standard enthalpy of atomization (or sublimation) of solid lithium. IE Li, the first ionization energy of gaseous lithium. B(F–F), the standard enthalpy of atomization (or bond energy) of fluorine gas.

  5. Enthalpy of vaporization - Wikipedia

    en.wikipedia.org/wiki/Enthalpy_of_vaporization

    Temperature-dependency of the heats of vaporization for water, methanol, benzene, and acetone. In thermodynamics, the enthalpy of vaporization (symbol ∆H vap), also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy that must be added to a liquid substance to transform a quantity of that substance into a gas.

  6. Public health experts are warning of a ‘quad-demic’ this ...

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    Public health experts are warning of a ‘quad-demic’ this winter. Here’s where flu, COVID, RSV, and norovirus are spreading

  7. NFL divisional round schedule, playoff bracket: Chiefs, Lions ...

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    The divisional round of the playoffs is up next. NFL divisional round schedule, playoff bracket: Chiefs, Lions back in action after postseason bye week

  8. Our Best Brownies Are Better Than Any Box-Mix & Just As ... - AOL

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    Remove from heat, add chocolate, and stir with a rubber spatula until melted and smooth. Stir in vanilla, espresso powder, and salt. In a large bowl, whisk granulated sugar and brown sugar.

  9. Born–Haber cycle - Wikipedia

    en.wikipedia.org/wiki/Born–Haber_cycle

    The enthalpy of formation of lithium fluoride (LiF) from its elements in their standard states (Li(s) and F 2 (g)) is modeled in five steps in the diagram: Atomization enthalpy of lithium; Ionization enthalpy of lithium; Atomization enthalpy of fluorine; Electron affinity of fluorine; Lattice enthalpy