![]() Please let us know how we can improve this web app. Related: Molecular weights of amino acids Weights of atoms and isotopes are from NIST article. Because 1 mol of ethanol contains 2 mol of carbon atoms (2 × 12.011 g), 6 mol of hydrogen atoms (6 × 1.0079 g), and 1 mol of oxygen atoms (1 × 15. Molar mass ( molar weight) is the mass of one mole of a substance and is expressed in g/mol.5 Some elements are only found in molecules of 2 atoms or more. The explosive reactions may be triggered by spark, heat, or sunlight. This converts atomic units to grams per mole, making the molar mass of hydrogen 1.007 grams per mole, of carbon 12.0107 grams per mole, of oxygen 15.9994 grams per mole, and of chlorine 35.453 grams per mole. 17 Hydrogen gas forms explosive mixtures with air in concentrations from 474 18 and with chlorine at 595. (1 u is equal to 1/12 the mass of one atom of carbon-12) 2 H2(g) + O2(g) 2 H2O (l) (572 kJ/2 mol 286 kJ/mol 141.865 MJ/kg) note 2 The enthalpy of combustion is 286 kJ/mol. Molecular mass ( molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u).In both cases, it is the mass of 6.02 × 10 23 molecules. For water, the molar mass is 18.02 g/mol. One mole of carbon dioxide molecules has a mass of 44.01 g. 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 Molecular formulas give the kind and number of atoms of each element present in the molecular compound. The molar mass of any compound is the mass in grams of one mole of that compound. 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) Although nonflammable, it is a powerful oxidizing agent that can cause spontaneous combustion when it. Hydrogen peroxide is unstable, decomposing readily to oxygen and water with release of heat. Small amounts of gaseous hydrogen peroxide occur naturally in the air. molecular weight and its low viscosity, hydrogen can cause a problem with respect to the propensity of the gas to leak at a larger molecular flow rate than. Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg Hydrogen peroxide is a colorless liquid at room temperature with a bitter taste. ![]() 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. Hydrogen is a colorless, odorless, and highly flammable gas.Ĭomputing molar mass (molar weight)To calculate molar mass of a chemical compound enter its formula and click 'Compute'.
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