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Coefficents calculated by NIST from author's data. In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:
Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file. The 3d structure may be viewed using Java or Javascript. Other names: Molecular oxygen; Oxygen molecule; Pure oxygen; O2; Liquid oxygen; UN 1072; UN 1073; Dioxygen. Permanent link for this species.
Jump to content. Oxygen. Formula: O 2. Molecular weight: 31.9988. IUPAC Standard InChI:InChI=1S/O2/c1-2 Copy. IUPAC Standard InChIKey:MYMOFIZGZYHOMD-UHFFFAOYSA-N Copy. CAS Registry Number: 7782-44-7.
Chemists use an instrument called a mass spectrometer to determine the molar mass of compounds. In order to go from the empirical formula to the molecular formula, follow these steps: Calculate the empirical formula molar mass (EFM). Divide the molar mass of the compound by the empirical formula molar mass.
This molecular formula calculator calculates the molecular formula of any compound based on its empirical formula and molar mass. It can handle formulas for both organic and inorganic compounds.
6.5: Mole Calculations. The molar mass of a substance is the sum of the average molar masses of the atoms that compose the substance. The molar mass of a substance can be used as a conversion factor between moles of the ….
Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
