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  2. Bond length - Wikipedia

    en.wikipedia.org/wiki/Bond_length

    Bond is located between carbons C1 and C2 as depicted in a picture below. Hexaphenylethane skeleton based derivative containing longest known C-C bond between atoms C1 and C2 with a length of 180.6 pm . Another notable compound with an extraordinary C-C bond length is tricyclobutabenzene, in which a bond length of 160 pm is reported.

  3. Chemical bonding of water - Wikipedia

    en.wikipedia.org/wiki/Chemical_bonding_of_water

    2 O) is a simple triatomic bent molecule with C 2v molecular symmetry and bond angle of 104.5° between the central oxygen atom and the hydrogen atoms. Despite being one of the simplest triatomic molecules , its chemical bonding scheme is nonetheless complex as many of its bonding properties such as bond angle , ionization energy , and ...

  4. Carbon–carbon bond - Wikipedia

    en.wikipedia.org/wiki/Carbon–carbon_bond

    In Gomberg's dimer, one C-C bond is rather long at 159.7 picometers. It is this bond that reversibly and readily breaks at room temperature in solution: [ 6 ] In the even more congested molecule hexakis(3,5-di- tert -butylphenyl)ethane , the bond dissociation energy to form the stabilized triarylmethyl radical is only 8 kcal/mol.

  5. Thermal conduction - Wikipedia

    en.wikipedia.org/wiki/Thermal_conduction

    The higher temperature object has molecules with more kinetic energy; collisions between molecules distributes this kinetic energy until an object has the same kinetic energy throughout. Thermal conductivity , frequently represented by k , is a property that relates the rate of heat loss per unit area of a material to its rate of change of ...

  6. Water (data page) - Wikipedia

    en.wikipedia.org/wiki/Water_(data_page)

    Data in the table above is given for water–steam equilibria at various temperatures over the entire temperature range at which liquid water can exist. Pressure of the equilibrium is given in the second column in kPa. The third column is the heat content of each gram of the liquid phase relative to water at 0 °C.

  7. Dimensionless numbers in fluid mechanics - Wikipedia

    en.wikipedia.org/wiki/Dimensionless_numbers_in...

    Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.

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  9. Heat transfer - Wikipedia

    en.wikipedia.org/wiki/Heat_transfer

    The transfer of energy between objects that are in physical contact. Thermal conductivity is the property of a material to conduct heat and is evaluated primarily in terms of Fourier's law for heat conduction. Convection The transfer of energy between an object and its environment, due to fluid motion.