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  2. Grecian Formula - Wikipedia

    en.wikipedia.org/wiki/Grecian_Formula

    Grecian Formula is a men's hair coloring product from Combe Incorporated. Until 2018 (see below) the formulation used in the United States contained lead(II) acetate . [ 1 ] Because lead acetate was banned in cosmetics in Canada and the European Union, the formulations sold there did not contain it.

  3. IUPAC numerical multiplier - Wikipedia

    en.wikipedia.org/wiki/IUPAC_numerical_multiplier

    The numbers 200-900 would be confused easily with 22 to 29 if they were used in chemistry. khīlioi = 1000, diskhīlioi = 2000, triskhīlioi = 3000, etc. 13 to 19 are formed by starting with the Greek word for the number of ones, followed by και (the Greek word for 'and'), followed by δέκα (the Greek word for 'ten').

  4. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    the work function in physics; the energy required by a photon to remove an electron from the surface of a metal; magnetic flux or electric flux; the cumulative distribution function of the normal distribution in statistics; phenyl functional group in organic chemistry (pseudoelement symbol)

  5. Lead(II) acetate - Wikipedia

    en.wikipedia.org/wiki/Lead(II)_acetate

    Lead(II) acetate is a white crystalline chemical compound with a slightly sweet taste.Its chemical formula is usually expressed as Pb(CH 3 COO) 2 or Pb(OAc) 2, where Ac represents the acetyl group.

  6. Formula unit - Wikipedia

    en.wikipedia.org/wiki/Formula_unit

    In chemistry, a formula unit is the smallest unit of a non-molecular substance, such as an ionic compound, covalent network solid, or metal. [1] [2] It can also refer to the chemical formula for that unit. Those structures do not consist of discrete molecules, and so for them, the term formula unit is used.

  7. Structural formula - Wikipedia

    en.wikipedia.org/wiki/Structural_formula

    Skeletal structural formula of Vitamin B 12. Many organic molecules are too complicated to be specified by a molecular formula. The structural formula of a chemical compound is a graphic representation of the molecular structure (determined by structural chemistry methods), showing how the atoms are connected to one another. [1]

  8. Michael Johnson's new Grand Slam Track signs deal for ... - AOL

    www.aol.com/michael-johnsons-grand-slam-track...

    Michael Johnson’s new track league has struck a media deal for Peacock to stream all the action live and The CW to broadcast the weekend races during the four events in 2025. The Grand Slam ...

  9. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...