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  2. Graham's law - Wikipedia

    en.wikipedia.org/wiki/Graham's_law

    Rate 1 is the rate of effusion for the first gas. (volume or number of moles per unit time). Rate 2 is the rate of effusion for the second gas. M 1 is the molar mass of gas 1 M 2 is the molar mass of gas 2. Graham's law states that the rate of diffusion or of effusion of a gas is inversely proportional to the square root of its molecular weight.

  3. Effusion - Wikipedia

    en.wikipedia.org/wiki/Effusion

    An example is the recoil force on a balloon with a small hole flying in vacuum. Measures of flow rate ... This equation is known as Graham's law of effusion.

  4. Gaseous diffusion - Wikipedia

    en.wikipedia.org/wiki/Gaseous_diffusion

    Gaseous diffusion is based on Graham's law, which states that the rate of effusion of a gas is inversely proportional to the square root of its molecular mass. For example, in a box with a microporous membrane containing a mixture of two gases, the lighter molecules will pass out of the container more rapidly than the heavier molecules, if the ...

  5. Portal : Chemistry/Useful equations and links - Wikipedia

    en.wikipedia.org/wiki/Portal:Chemistry/Useful...

    Graham's law of effusion = where: Rate 1 is the rate of effusion of the first gas. Rate 2 is the rate of ... where, for a given sample of carbonaceous matter: ...

  6. List of experiments - Wikipedia

    en.wikipedia.org/wiki/List_of_experiments

    Thomas Graham measures the rates of effusion for different gases and establishes Graham's law of effusion and diffusion (1833). Julius Robert von Mayer and James Prescott Joule measure the heat generated by mechanical work. This establishes the principle of conservation of energy and the kinetic theory of heat (1842–1843).

  7. FBI advocates appeal to Congress as agents face scrutiny for ...

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    Advocacy groups representing FBI agents appealed to the U.S. Congress on Monday to intervene to stop possible mass firings of agents who worked on the investigation of the Jan. 6, 2021 Capitol ...

  8. Gas laws - Wikipedia

    en.wikipedia.org/wiki/Gas_laws

    Graham's law This law states that the rate at which gas molecules diffuse is inversely proportional to the square root of the gas density at a constant temperature. Combined with Avogadro's law (i.e. since equal volumes have an equal number of molecules) this is the same as being inversely proportional to the root of the molecular weight.

  9. ‘Becoming Led Zeppelin’ Is an Exhilarating, Hard-Rocking ...

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    The world loves a good “rise of” story — one that captures the first months of a now-superstar artist’s meteoric rise, whether it’s Elvis or the Beatles or Madonna or Prince or Nirvana ...