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  2. Extent of reaction - Wikipedia

    en.wikipedia.org/wiki/Extent_of_reaction

    The change in the extent of reaction is then defined as [2] [3] = where denotes the number of moles of the reactant or product and is the stoichiometric number [4] of the reactant or product. Although less common, we see from this expression that since the stoichiometric number can either be considered to be dimensionless or to have units of ...

  3. List of common display resolutions - Wikipedia

    en.wikipedia.org/wiki/List_of_common_display...

    16:9. 8,294,400. 7680 × 4320. 8K UHDTV. 4320p. 33,177,600. Many of these resolutions are also used for video files that are not broadcast. These may also use other aspect ratios by cropping otherwise black bars at the top and bottom which result from cinema aspect ratios greater than 16∶9, such as 1.85 or 2.35 through 2.40 (dubbed ...

  4. Dell - Wikipedia

    en.wikipedia.org/wiki/Dell

    Dell UltraSharp is further a high-end brand of monitors. Dell service and support brands include the Dell Solution Station (extended domestic support services, previously "Dell on Call"), Dell Support Center (extended support services abroad), Dell Business Support (a commercial service-contract that provides an industry-certified technician ...

  5. Dark matter - Wikipedia

    en.wikipedia.org/wiki/Dark_matter

    The hypothesis of dark matter has an elaborate history. [18] In the appendices of the book Baltimore lectures on molecular dynamics and the wave theory of light where the main text was based on a series of lectures given in 1884, [19] Lord Kelvin discussed the potential number of stars around the Sun from the observed velocity dispersion of the stars near the Sun, assuming that the Sun was 20 ...

  6. Image persistence - Wikipedia

    en.wikipedia.org/wiki/Image_persistence

    Image persistence, or image retention, is the LCD and plasma display equivalent of screen burn-in. Unlike screen burn, the effects are usually temporary and often not visible without close inspection. Plasma displays experiencing severe image persistence can result in screen burn-in instead. Image persistence can occur as easily as having ...

  7. Enthalpy of mixing - Wikipedia

    en.wikipedia.org/wiki/Enthalpy_of_mixing

    When a substance or compound is combined with any other substance or compound, the enthalpy of mixing is the consequence of the new interactions between the two substances or compounds. [1] This enthalpy, if released exothermically, can in an extreme case cause an explosion. Enthalpy of mixing can often be ignored in calculations for mixtures ...

  8. Best CD rates today: Last chance on premium rates ... - AOL

    www.aol.com/finance/best-cd-rates-today-last...

    It's expected that the Federal Reserve will post a continued hold on the Fed rate at 5.25% to 5.50% after its policy meeting this week on July 30 and July 31, 2024. The CME FedWatch Tool, which ...

  9. Yield (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Yield_(chemistry)

    Yield (chemistry) In chemistry, yield, also known as reaction yield or chemical yield, refers to the amount of product obtained in a chemical reaction. [1] Yield is one of the primary factors that scientists must consider in organic and inorganic chemical synthesis processes. [2] In chemical reaction engineering, "yield", "conversion" and ...

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