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  2. Van der Waals equation - Wikipedia

    en.wikipedia.org/wiki/Van_der_Waals_equation

    Here because is a multivalued function, the integral must be divided into 3 parts corresponding to the 3 real roots of the vdW equation in the form, (,) (this can be visualized most easily by imagining Fig. 1 rotated ); the result is a special case of material equilibrium. [62]

  3. Gas constant - Wikipedia

    en.wikipedia.org/wiki/Gas_constant

    Using his extensive measurements of the properties of gases, [6] [7] Mendeleev also calculated it with high precision, within 0.3% of its modern value. [ 8 ] The gas constant occurs in the ideal gas law: P V = n R T = m R s p e c i f i c T {\displaystyle PV=nRT=mR_{\rm {specific}}T} where P is the absolute pressure , V is the volume of gas, n ...

  4. Ideal gas law - Wikipedia

    en.wikipedia.org/wiki/Ideal_gas_law

    The table below essentially simplifies the ideal gas equation for a particular process, making the equation easier to solve using numerical methods. A thermodynamic process is defined as a system that moves from state 1 to state 2, where the state number is denoted by a subscript.

  5. Stoichiometry - Wikipedia

    en.wikipedia.org/wiki/Stoichiometry

    There is a 1:1 molar ratio of NH 3 to NO 2 in the above balanced combustion reaction, so 5.871 mol of NO 2 will be formed. We will employ the ideal gas law to solve for the volume at 0 °C (273.15 K) and 1 atmosphere using the gas law constant of R = 0.08206 L·atm·K −1 ·mol −1:

  6. Boltzmann constant - Wikipedia

    en.wikipedia.org/wiki/Boltzmann_constant

    Boltzmann constant: The Boltzmann constant, k, is one of seven fixed constants defining the International System of Units, the SI, with k = 1.380 649 x 10 −23 J K −1. The Boltzmann constant is a proportionality constant between the quantities temperature (with unit kelvin) and energy (with unit joule). [3]

  7. Marcus theory - Wikipedia

    en.wikipedia.org/wiki/Marcus_theory

    In outer sphere redox reactions no bonds are formed or broken; only an electron transfer (ET) takes place. A quite simple example is the Fe 2+ /Fe 3+ redox reaction, the self exchange reaction which is known to be always occurring in an aqueous solution containing the aquo complexes [Fe(H 2 O) 6] 2+ and [Fe(H 2 O)6] 3+.

  8. Kinetic closest pair - Wikipedia

    en.wikipedia.org/wiki/Kinetic_closest_pair

    Map each point p=(x, y) in the set P to a new point p' = (u, v) = (x+ √ 3 y, y-√ 3 x), forming the set P' of transformed points. Note that for a point p, the points in the "main" wedges have u and v coordinates either larger or smaller than p' in this new coordinate system. Sort the points by x,u and v coordinates, and store them in kinetic ...

  9. Hamilton–Jacobi–Bellman equation - Wikipedia

    en.wikipedia.org/wiki/Hamilton–Jacobi–Bellman...

    In discrete-time, an approach to solve the HJB equation combining value iterations and neural networks was introduced. [ 16 ] Alternatively, it has been shown that sum-of-squares optimization can yield an approximate polynomial solution to the Hamilton–Jacobi–Bellman equation arbitrarily well with respect to the L 1 {\displaystyle L^{1}} norm.