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The [NH 3]/[H 2] ratio has been estimated to range from 10 −7 in small dark clouds [176] up to 10 −5 in the dense core of the Orion molecular cloud complex. [177] Although a total of 18 total production routes have been proposed, [178] the principal formation mechanism for interstellar NH 3 is the reaction:
Molecular structure Point group ... The fifth column is the heat of vaporization needed to convert one gram of liquid to vapor. ... NH 3: Partial pressure H 2 O 0 °C ...
The gram-atom is a former term for a mole of atoms, and gram-molecule for a mole of molecules. [7] Molecular weight (M.W.) (for molecular compounds) and formula weight (F.W.) (for non-molecular compounds), are older terms for what is now more correctly called the relative molar mass (M r). [8]
The molecular mass and relative molecular mass are distinct from but related to the molar mass. The molar mass is defined as the mass of a given substance divided by the amount of the substance , and is expressed in grams per mol (g/mol).
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;
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 ]
azane (or ammonia), NH 3 - one nitrogen and three hydrogen diazane (or hydrazine), N 2 H 4 - two nitrogen and four hydrogen triazane, N 3 H 5 - three nitrogen and five hydrogen. Azanes with three or more nitrogen atoms are named by adding the suffix-azane to the appropriate numerical multiplier prefix. Hence, triazane, N 3 H 5; tetrazane or ...
The molecular mass (m) is the mass of a given molecule: it is measured in daltons (Da) or atomic mass units (u), where 1 Da = 1 u = 1.660 538 782(83)×10–27 kg).[3][4] Different molecules of the same compound may have different molecular masses because they contain different isotopes of an element.