# enthalpy

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Related to enthalpy: entropy, Gibbs free energy

## en·thal·py (H),

(en'thal-pē),
Heat content, symbolized as H; a thermodynamic function, defined as E + PV, where E is the internal energy of a system, P the pressure, and V the volume; the heat of a reaction, measured at constant pressure, is ΔH.
Synonym(s): heat (4)
[G. enthalpō, to warm in]

## en·thal·py

(H) (en'thal-pē)
Heat content, symbolized as H; a thermodynamic function, defined as E + PV, where E is the internal energy of a system, P the pressure, and V the volume; the heat of a reaction, measured at constant pressure, is ΔH.
Synonym(s): heat (3) .
[G. enthalpō, to warm in]
References in periodicals archive ?
This process is controlled by enthalpy if [T.sub.B] > [T.sub.hm]; otherwise, the process is controlled by entropy (Telis-Romero et al., 2005).
As mentioned earlier, the enthalpy versus lithium concentration data for graphite and ROHG in Figure 6 suggests that though the trends in the change in the enthalpy look similar, there is a more gradual change in the slope of enthalpy curve for ROHG compared to graphite.
Total enthalpy is assumed to be constant from the impeller exit to the volute exit, while total pressure is allowed to rise.
The gas phase enthalpy of formation of [H.sub.2]O (water) is largely based on the combustion measurements of liquid water by Rossini (1939) [102-104] decades ago.
where [h.sub.5]--freon enthalpy at the 2nd stage compressor exit, kJ/kg.
To resolve your evaporation enthalpy problem, you need to do two things:
Now for the calculation of the enthalpy of reaction at a temperature other than the reference the following equations were used [21, 27].
Inspite of remarkable lowering of ofloxacin melting temperature thermal events unambiguously characteristic of the drug did hardly experience an enthalpy change.
Consequently, sustained warm SSTs and enthalpy flux help support warm, moist atmospheric boundary layer conditions (via 0E), which have been shown in previous literature to aid in TC intensification.
Enthalpy Analytical, LLC is a wholly owned subsidiary of Montrose Environmental Group, Inc., providing environmental laboratory services as part of Montrose's Measurement and Analytical Services division.

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