The average human consumes up to 7 grams of potassium a day, and stores about 140 grams in the body cells. A normal healthy diet contains enough potassium, but some foods such as instant coffee, sardines, nuts, raisins, potatoes and chocolate have above average potassium content.
http://www.rsc.org/periodic-table/element/19/potassium
History and Uses: Although potassium is the eighth most abundant element on earth and comprises about 2.1% of the earth's crust, it is a very reactive element and is never found free in nature. Metallic potassium was first isolated by Sir Humphry Davy in 1807 through the electrolysis of molten caustic potash (KOH).
http://education.jlab.org/itselemental/ele019.html
Si is one of the most abundant elements in the Earth but it is depleted in the mantle relative to its concentration in chondritic meteorites (e.g., Ringwood, 1959). Recently, it was reported that the solubility of both Si and O in metallic iron increases with increasing pressure (e.g., Sakai et al., 2006).
http://www.sciencedirect.com/science/article/pii/S003192011400212X
These previous studies thus concluded that the potassium abundance in the core varied from 2 to 250 ppm. Although previous studies helped to understand the behavior of potassium in the core, the actual potassium abundance in the core are still controversial and under debate.
http://www.sciencedirect.com/science/article/pii/S003192011400212X
Potassium is pronounced as poh-TASS-ee-em. Although potassium is the eighth most abundant element on earth and comprises about 2.1% of the earth's crust, it is a very reactive element and is never found free in nature.
http://education.jlab.org/itselemental/ele019.html
Temperature, oxygen in metal, and fO2 have positive effect on potassium partitioning. Pressure, silicon in metal, and NBO/T have negative effect on potassium partitioning. From these trends, we estimate the 40K’s heat in the core is less than 0.17 TW.
http://www.sciencedirect.com/science/article/pii/S003192011400212X
We used data of the potassium’s mantle abundance (240 ppm; McDonough, 2003), the mass of the Earth’s core, (1.932 × 1024 kg; McDonough, 2003), the heat of 40K per unit weight (1.917 × 10–5 W/kg, Weast et al., 1988), and the 40K abundance among all potassium (0.0117%, Laeter et al., 2003) in the estimations.
http://www.sciencedirect.com/science/article/pii/S003192011400212X
The most abundant cation in extracellular fluid is potassium. T or F. The most abundant cation (or positively charged ion) in the extracellular fluid (ECF) is sodium (Na+). The most abundant anion (or negatively charged ion) in the ECF is chloride (Cl-). The most abundant cation in the intracellular fluid (ICF) is potassium (K+).
https://quizlet.com/5310530/fluid-electrolyte-flash-cards/
The most abundant cation in extracellular fluid is potassium. False. The most abundant cation (or positively charged ion) in the extracellular fluid (ECF) is sodium (Na+). The most abundant anion (or negatively charged ion) in the ECF is chloride (Cl-). The most abundant cation in the intracellular fluid (ICF) is potassium (K+). The most abundant anion in the ICF is hydrogen phosphate (HPO4-).
https://quizlet.com/5310530/fluid-electrolyte-flash-cards/
Oxygen in metal increases the potassium content in metal, whereas silicon in metal has the opposite effect. According to the present study on potassium partitioning, we estimated that the amount of potassium in the core is less than 40 ppm and that it generates less than 0.17 TW heat in the core.
http://www.sciencedirect.com/science/article/pii/S003192011400212X
where is potassium abundant
Potassium is abundant in the Earth's crust. Potassium abundant is in the Earth's crust.