Search results
Results from the WOW.Com Content Network
The molecular formula C 6 H 8 O 6 (molar mass: 176.124 g/mol) may be: Ascorbic acid (vitamin C) Erythorbic acid; Glucuronolactone; Propane-1,2,3-tricarboxylic acid;
[2] [3] In reference to the compound's antiscorbutic properties, Haworth and Szent-Györgyi proposed to rename it "a-scorbic acid" for the compound, and later specifically l-ascorbic acid. [4] Because of their work, in 1937 two Nobel Prizes : in Chemistry and in Physiology or Medicine were awarded to Haworth and Szent-Györgyi, respectively.
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] This is a dimensionless quantity (i.e., a pure number, without units) equal to the molar mass divided by the molar mass constant. [notes 1]
In high-resolution mass spectrometry the mass isotopomers 12 C 1 H 4 and 13 C 1 H 4 are observed as distinct molecules, with molecular masses of approximately 16.031 Da and 17.035 Da, respectively. The intensity of the mass-spectrometry peaks is proportional to the isotopic abundances in the molecular species.
The molecular formula C 6 H 8 O (molar mass: 96.13 g/mol, exact mass: 96.05751 u) may refer to: Cyclohexenone; 2,5-Dimethylfuran; 2,3-Dimethylfuran; 2,4-Dimethylfuran;
The ideal gas equation can be rearranged to give an expression for the molar volume of an ideal gas: = = Hence, for a given temperature and pressure, the molar volume is the same for all ideal gases and is based on the gas constant: R = 8.314 462 618 153 24 m 3 ⋅Pa⋅K −1 ⋅mol −1, or about 8.205 736 608 095 96 × 10 −5 m 3 ⋅atm⋅K ...
For gases, departure from 3 R per mole of atoms is generally due to two factors: (1) failure of the higher quantum-energy-spaced vibration modes in gas molecules to be excited at room temperature, and (2) loss of potential energy degree of freedom for small gas molecules, simply because most of their atoms are not bonded maximally in space to ...
where the pressure, p, is the atmospheric pressure, V is the measured volume of the vessel, T is the absolute temperature of the hot bath, and R is the gas constant. The molecular weight of the chemical is then simply the mass in grams of the vapor within the vessel divided by the calculated number of mole.