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Assuming an NH + 4 abundance of and an electron abundance of 10 −7 typical of molecular clouds, the formation will proceed at a rate of 1.6 × 10 −9 cm −3 s −1 in a molecular cloud of total density 10 5 cm −3.
The derived quantity relative molecular mass is the unitless ratio of the mass of a molecule to the atomic mass constant (which is equal to one dalton). [2] The molecular mass and relative molecular mass are distinct from but related to the molar mass.
At 15.6 °C (60.1 °F), the density of a saturated solution is 0.88 g/ml; it contains 35.6% ammonia by mass, 308 grams of ammonia per litre of solution, and has a molarity of approximately 18 mol/L. At higher temperatures, the molarity of the saturated solution decreases and the density increases. [ 8 ]
NH3, NH-3, NH 3 or NH 3 may refer to: Ammonia (chemical formula NH 3) National Highway 3 (India) National Highway 3 (India, old numbering) New Hampshire Route 3;
In some separation schemes, palladium is purified by manipulating equilibria involving [Pd(NH 3) 4]Cl 2, [PdCl 2 (NH 3) 2], and [Pt(NH 3) 4][PtCl 4] (Magnus's green salt). In the processing of cellulose, the copper ammine complex known as Schweizer's reagent ([Cu(NH 3) 4 (H 2 O) 2](OH) 2) is sometimes used to solubilise the polymer. Schweizer's ...
Ammonium is a modified form of ammonia that has an extra hydrogen atom. It is a positively charged molecular ion with the chemical formula NH + 4 or [NH 4] +.It is formed by the addition of a proton (a hydrogen nucleus) to ammonia (NH 3).
nh 3 + 3 c 2 h 5 oh → n(c 2 h 5) 3 + 3 h 2 o The pK a of protonated triethylamine is 10.75, [ 4 ] and it can be used to prepare buffer solutions at that pH. The hydrochloride salt , triethylamine hydrochloride (triethylammonium chloride), is a colorless, odorless, and hygroscopic powder, which decomposes when heated to 261 °C.
Reaction of diborane with ammonia mainly gives the diammoniate salt [H 2 B(NH 3) 2] + [BH 4] − (diammoniodihydroboronium tetrahydroborate). Ammonia borane is the main product when an adduct of borane is employed in place of diborane: [5] BH 3 + NH 3 → BH 3 NH 3 + THF. It can also be synthesized from sodium borohydride. [6] [7] [8]