26 | Half-cell reduction potential at room temperature (Nernst equation) | ![](http://www.wikicalculator.com/formula_image/Half-cell-reduction-potential-at-room-temperature-(Nernst-equation)-432s.png) |
27 | Equilibrium constant of a redox reaction (given the standard electrode potential) | ![](http://www.wikicalculator.com/formula_image/Equilibrium-constant-of-a-redox-reaction-(given-the-standard-electrode-potential)-434s.png) |
28 | Equilibrium constant of a redox reaction at room temperature (Given the standard electrode potential) | ![](http://www.wikicalculator.com/formula_image/Equilibrium-constant-of-a-redox-reaction-at-room-temperature-(Given-the-standard-electrode-potential)-435s.png) |
29 | Equilibrium potential across a cell's membrane (the Goldman-GHK equation) | ![](http://www.wikicalculator.com/formula_image/Equilibrium-potential-across-a-cells-membrane-(the-Goldman-GHK-equation)-436s.png) |
30 | Temperature of tnterest (Given vapor pressure and molar enthalpy of vaporization) (The Clausius-Clapeyron equation) | ![](http://www.wikicalculator.com/formula_image/Temperature-of-tnterest-(Given-vapor-pressure-and-molar-enthalpy-of-vaporization)-(The-Clausius-Clapeyron-equation)-439s.png) |
31 | Enthalpy of the system (Given internal energy,pressure and volume) | ![](http://www.wikicalculator.com/formula_image/Enthalpy-of-the-system-(Given-internal-energy-pressure-and-volume)-507s.png) |
32 | Vapor pressure (Given temperature,pressure, enthalpy of vaporization) | ![](http://www.wikicalculator.com/formula_image/Vapor-pressure-(Given-temperature-pressure--enthalpy-of-vaporization)-440s.png) |
33 | Temperature of interest (Given equilibrium constant and enthalpy change)(The Van 't Hoff equation) | ![](http://www.wikicalculator.com/formula_image/Temperature-of-interest-(Given-equilibrium-constant-and-enthalpy-change)(The-Van-t-Hoff-equation)-441s.png) |
34 | Equilibrium constant (Given temperature and enthalpy change, Van 't Hoff equation) | ![](http://www.wikicalculator.com/formula_image/Equilibrium-constant-(Given-temperature-and-enthalpy-change--Van-t-Hoff-equation)-442s.png) |
35 | Reaction rate constant (By the Arrhenius equation) | ![](http://www.wikicalculator.com/formula_image/Reaction-rate-constant-(By-the-Arrhenius-equation)-472s.png) |
36 | Activation energy (by the Arrhenius equation) | ![](http://www.wikicalculator.com/formula_image/Activation-energy-(by-the-Arrhenius-equation)-473s.png) |
37 | Number concentrations of the solute gas in the melt phases (Henry's law in geophysics) | ![](http://www.wikicalculator.com/formula_image/Number-concentrations-of-the-solute-gas-in-the-melt-phases-(Henrys-law-in-geophysics)-488s.png) |
38 | Number concentrations of the solute gas in the melt phases (Henry's law in geophysics) | ![](http://www.wikicalculator.com/formula_image/Number-concentrations-of-the-solute-gas-in-the-melt-phases-(Henrys-law-in-geophysics)-489s.png) |
39 | Height of a liquid column (Capillary action) | ![](http://www.wikicalculator.com/formula_image/Height-of-a-liquid-column-(Capillary-action)-490s.png) |
40 | Cumulative volume of absorbed liquid (Liquid transport in porous media) | ![](http://www.wikicalculator.com/formula_image/Cumulative-volume-of-absorbed-liquid-(Liquid-transport-in-porous-media)-491s.png) |
41 | Cumulative infiltration (Liquid transport in porous media) | ![](http://www.wikicalculator.com/formula_image/Cumulative-infiltration-(Liquid-transport-in-porous-media)-492s.png) |
42 | Wetted length (given Liquid transport in porous media, cumulative liquid intake) | ![](http://www.wikicalculator.com/formula_image/Wetted-length-(given-Liquid-transport-in-porous-media--cumulative-liquid-intake)-493s.png) |
43 | Wetted length (given liquid transport in porous media, sorptivity, porosity ) | ![](http://www.wikicalculator.com/formula_image/Wetted-length-(given-liquid-transport-in-porous-media--sorptivity--porosity-)-494s.png) |
44 | Liquid-air surface tension (Capillary action) | ![](http://www.wikicalculator.com/formula_image/Liquid-air-surface-tension-(Capillary-action)-495s.png) |
45 | Density of liquid (given liquid-air surface tension,capillary action) | ![](http://www.wikicalculator.com/formula_image/Density-of-liquid-(given-liquid-air-surface-tension-capillary-action)-496s.png) |
46 | Radius of tube (given liquid-air surface tension,density,height of liquid column, Capillary action) | ![](http://www.wikicalculator.com/formula_image/Radius-of-tube-(given-liquid-air-surface-tension-density-height-of-liquid-column--Capillary-action)-497s.png) |
47 | Volume of the pores (Measuring porosity by gas expansion method) | ![](http://www.wikicalculator.com/formula_image/Volume-of-the-pores-(Measuring-porosity-by-gas-expansion-method)-498s.png) |
48 | Porosity (Measuring by gas expansion method) | ![](http://www.wikicalculator.com/formula_image/Porosity-(Measuring-by-gas-expansion-method)-499s.png) |
49 | Specific heat at constant pressure (Mayer\'s Relation) | ![](http://www.wikicalculator.com/formula_image/Specific-heat-at-constant-pressure-(Mayers-Relation)-500s.png) |
50 | Specific heat at constant volume (Mayer's Relation) | ![](http://www.wikicalculator.com/formula_image/Specific-heat-at-constant-volume-(Mayers-Relation)-501s.png) |