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  2. Fractionation - Wikipedia

    en.wikipedia.org/wiki/Fractionation

    [1] [2] Fractions are collected based on differences in a specific property of the individual components. A common trait in fractionations is the need to find an optimum between the amount of fractions collected and the desired purity in each fraction. Fractionation makes it possible to isolate more than two components in a mixture in a single run.

  3. Fraction (chemistry) - Wikipedia

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

    A fraction in chemistry is a quantity collected from a batch of a substance in a fractionating separation process. In such a process, a mixture is separated into fractions, which have compositions that vary according to a gradient. A fraction can be defined as a group of chemicals that have similar boiling points.

  4. Lever rule - Wikipedia

    en.wikipedia.org/wiki/Lever_rule

    In chemistry, the lever rule is a formula used to determine the mole fraction (x i) or the mass fraction (w i) of each phase of a binary equilibrium phase diagram. It can be used to determine the fraction of liquid and solid phases for a given binary composition and temperature that is between the liquidus and solidus line. [1]

  5. Short division - Wikipedia

    en.wikipedia.org/wiki/Short_division

    It is an abbreviated form of long division — whereby the products are omitted and the partial remainders are notated as superscripts. As a result, a short division tableau is shorter than its long division counterpart — though sometimes at the expense of relying on mental arithmetic , which could limit the size of the divisor .

  6. NYT ‘Connections’ Hints and Answers Today, Thursday, December 12

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    1. All of these words sound like a specific letter in the alphabet. 2. These items are known for their notched edges. 3. Expressions that show mild frustration. 4. Features of a flowing body of water.

  7. 20 Contest-Winning Desserts That Will Wow a Crowd - AOL

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    Ree's been using this same recipe since 1999! They duplicate an old favorite from Starbucks that pairs perfectly with a cup of coffee any time of day. Chopped pecans add a lovely crunch on top.

  8. Fractional distillation - Wikipedia

    en.wikipedia.org/wiki/Fractional_distillation

    The calculations involved in the design of petroleum fractionation columns require in the usual practice the use of numerable charts, tables, and complex empirical equations. In recent years, however, a considerable amount of work has been done to develop efficient and reliable computer-aided design procedures for fractional distillation.

  9. The Most Common Holiday Dangers for Pets

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    The holidays are a festive time of year. Homes are decorated for the season — Christmas trees, ornaments, poinsettias, and the like. And there are also plenty of holiday treats that are ...

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