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At atmospheric pressure, mixtures of ethanol and water form an azeotrope at about 89.4 mol% ethanol (95.6% ethanol by mass, [84] 97% alcohol by volume), with a boiling point of 351.3 K (78.1 °C). [85] At lower pressure, the composition of the ethanol-water azeotrope shifts to more ethanol-rich mixtures. [86]
Standard molar entropy, S o liquid: 159.9 J/(mol K) Enthalpy of combustion, ... Mass concentration, g/(100 ml) at 15.56 °C Density relative to 4 °C water
The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
Molar mass: 68.051 g·mol −1 Appearance White hygroscopic powder Density: 0.868 g/cm 3 (of a 21 wt% solution in ethanol) Melting point: 260 °C (500 °F; 533 K)
IUPAC name: Common name: Structural formula Propionic acid: propanoic acid ethanecarboxylic acid CH 3 CH 2 CO 2 H : Acrylic acid: propenoic acid acroleic acid ethylenecarboxylic acid
A saturated water solution, of about 40% formaldehyde by volume or 37% by mass, is called "100% formalin". A small amount of stabilizer, such as methanol, is usually added to suppress oxidation and polymerization. A typical commercial-grade formalin may contain 10–12% methanol in addition to various metallic impurities.
Molar mass: 118.60 g·mol −1: Density: 1 g/mL Melting point: −44 °C (−47 °F; 229 K) Boiling point: 142 °C (288 °F; 415 K) Solubility in water. low Hazards ...
The molecular formula C 2 H 6 O (molar mass: 46.07 g/mol, exact mass: 46.0419 u) may refer to: Dimethyl ether (DME, or methoxymethane) Ethanol; Other.