Please let us know how we can improve this web app. The molar mass of individual elements helps in calculating compounds as well. Related: Molecular weights of amino acids Weights of atoms and isotopes are from NIST article. Molar mass ( molar weight) is the mass of one mole of a substance and is expressed in g/mol.(1 u is equal to 1/12 the mass of one atom of carbon-12) Molecular mass ( molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u).Using the previous equation, how many moles of O2 are needed to react with. Oxygen Formula:O2 Molecular weight:31.9988 IUPAC Standard InChI:InChI1S/O2/c1-2Copy IUPAC Standard InChIKey:MYMOFIZGZYHOMD-UHFFFAOYSA-NCopy CAS Registry Number: Chemical structure: This structure is also available as a 2d Mol fileor as a computed3d SD file The 3d structure may be viewed using Javaor Javascript. To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.Įxamples of molecular weight computations:ĭefinitions of molecular mass, molecular weight, molar mass and molar weight Solution: Find out the molar mass of the substance (hint: you can use Molar. Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.Ĭomputing molecular weight (molecular mass) Oxygen O2 CID 977 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards. Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg. ![]() Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al. Computing molar mass (molar weight)To calculate molar mass of a chemical compound enter its formula and click 'Compute'.
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