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In industry, the various grades of sodium silicate are characterized by their SiO 2 :Na 2 O weight ratio (which can be converted to molar ratio by multiplication with 1.032). The ratio can vary between 1:2 and 3.75:1. [1] Grades with ratio below 2.85:1 are termed alkaline. Those with a higher SiO 2 :Na 2 O ratio are described as neutral.
Physical properties. Pure sodium hydroxide is a colorless crystalline solid that melts at 318 °C (604 °F) without decomposition and boils at 1,388 °C (2,530 °F). It is highly soluble in water, with a lower solubility in polar solvents such as ethanol and methanol. [14] Sodium hydroxide is insoluble in ether and other non-polar solvents.
Sodium is a chemical element; it has symbol Na (from Neo-Latin natrium) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is 23 Na. The free metal does not occur in nature and must be prepared from compounds.
1:18 →. Beginning of Gospel of John (and the end of Gospel of Luke) in Codex Vaticanus (4th century) Book. Gospel of John. Christian Bible part. New Testament. John 1:17 is the seventeenth verse in the first chapter of the Gospel of John in the New Testament of the Christian Bible .
1991–2015 [1] Number built. 279 [1] Developed from. McDonnell Douglas YC-15. The McDonnell Douglas / Boeing C-17 Globemaster III is a large military transport aircraft that was developed for the United States Air Force (USAF) from the 1980s to the early 1990s by McDonnell Douglas. The C-17 carries forward the name of two previous piston ...
The series ran from 1983 to 1986, but it wasn't until years after it ended that creator Mike Young revealed Skeleton's true identity. In 2014, Young told Radio Times that his show had "a gun ...
Pre-packaged seasonings and spice blends containing sodium may be OK for healthy people to use in moderation, but they can easily push your sodium intake over 2,300 milligrams, the experts note. ...
Richard Simmons is sending all the good vibes to Princess Kate Middleton. “I know I ask you to pray for people…I am asking you to please pray for Princess Kate,” Simmons, 75, shared in a ...