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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Per-kilogram prices of some synthetic radioisotopes range to trillions of dollars. ... and the cost of extraction of the element, at zero. ... Potassium: 0.862: 20900 ...

  3. Table of specific heat capacities - Wikipedia

    en.wikipedia.org/wiki/Table_of_specific_heat...

    The specific heat of the human body calculated from the measured values of individual tissues is 2.98 kJ · kg−1 · °C−1. This is 17% lower than the earlier wider used one based on non measured values of 3.47 kJ · kg−1· °C−1.

  4. Separative work units - Wikipedia

    en.wikipedia.org/wiki/Separative_work_units

    Separative work – the amount of separation done by a Uranium enrichment process – is a function of the concentrations of the feedstock, the enriched output, and the depleted tailings; and is expressed in units which are so calculated as to be proportional to the total input (energy / machine operation time) and to the mass processed.

  5. Potassium - Wikipedia

    en.wikipedia.org/wiki/Potassium

    Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number 19. It is a silvery white metal that is soft enough to easily cut with a knife. [9] Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure.

  6. Sodium–potassium alloy - Wikipedia

    en.wikipedia.org/wiki/Sodium–potassium_alloy

    NaK containing 40% to 90% potassium by mass is liquid at room temperature.The eutectic mixture consists of 77% potassium and 23% sodium by mass (NaK-77), and it is a liquid from −12.6 to 785 °C (9.3 to 1,445.0 °F), and has a density of 0.866 g/cm 3 at 21 °C (70 °F) and 0.855 g/cm 3 at 100 °C (212 °F), making it less dense than water. [3]

  7. Equivalent (chemistry) - Wikipedia

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

    Elemental mEq to compound weight Potassium (reference) K 39.098 g/mol 1 (K +) 20 mEq potassium 20*39.098/1=782 mg Potassium citrate monohydrate C 6 H 7 K 3 O 8: 324.41 g/mol 3 (K +) Liquid potassium citrate/gluconate therapy for adults and teenagers taken two to four times a day [3] 20 mEq potassium 20*324/3=2160 mg Potassium gluconate ...

  8. Potassium cyanide - Wikipedia

    en.wikipedia.org/wiki/Potassium_cyanide

    Potassium cyanide is a compound with the formula KCN. It is a colorless salt, similar in appearance to sugar , that is highly soluble in water. Most KCN is used in gold mining , organic synthesis , and electroplating .

  9. Potassium silicate - Wikipedia

    en.wikipedia.org/wiki/Potassium_silicate

    Potassium silicate is the name for a family of inorganic compounds. The most common potassium silicate has the formula K 2 SiO 3 , samples of which contain varying amounts of water . These are white solids or colorless solutions.