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Ammonia is found throughout the Solar System on Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto, among other places: on smaller, icy bodies such as Pluto, ammonia can act as a geologically important antifreeze, as a mixture of water and ammonia can have a melting point as low as −100 °C (−148 °F; 173 K) if the ammonia concentration is ...
Right of the III. point the frozen component is ammonia. [6] Vapor over aqueous ammonia solution [7] Temp. %wt NH 3: Partial pressure NH 3: Partial pressure H 2 O 0 ...
Ammonia solution, also known as ammonia water, ammonium hydroxide, ammoniacal liquor, ammonia liquor, aqua ammonia, aqueous ammonia, or (inaccurately) ammonia, is a solution of ammonia in water. It can be denoted by the symbols NH 3 (aq). Although the name ammonium hydroxide suggests a salt with the composition [NH + 4][OH −
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at a standard pressure such as 1 atmosphere or 100 kPa.
Ammonium carbonate is produced by combining carbon dioxide and aqueous ammonia. About 80,000 tons/year were produced as of 1997. 2 NH 3 + H 2 O + CO 2 → [NH 4] 2 CO 3 [2] An orthorhombic ammonium carbonate monohydrate is known ([NH 4] 2 CO 3 ·H 2 O). It crystallizes in an ammonia solution exposed in a carbon dioxide-rich atmosphere. [3]
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Melting point: 113 °C (235 °F; 386 K) [4] Solubility in water. ... a catalyst in the Knoevenagel condensation and as a source of ammonia in the Borch reaction in ...