The procedure was successfully applied to the determination of trace amounts of nickel in well water and waste water in coating plant. The method is simple and free from the interference of all cations and anions and has a wide linear range. The quantitative ﬂotation of the complex was possible in the pH range of 9-12. The complex was separated and Ni determined spectrophotometrically by DMG after addition of oxidizing agent. The method is based on the ﬂotation of a complex of Ni and dimethylglyoxime (DMG) at the aqueous solution- n-hexane interface. Hamid Hashemi-Moghaddam * of Chemistry, Islamic Azad University Damghan Branch, PO Box 36716-39998, Damghan, IranĪ simple and selective method for separation and preconcentration of nickel has been developed. Please let us know how we can improve this web app.A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime 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).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 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) 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'.

Dmg chemical