![]() ![]() ![]() 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. 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. Symbols, abbreviations, or full names for units of length,Īrea, mass, pressure, and other types.Computing molar mass (molar weight)To calculate molar mass of a chemical compound enter its formula and click 'Compute'. ![]() You can find metric conversion tables for SI units, as wellĪs English units, currency, and other data. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula.Ĭonversion calculator for all types of measurement units. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.įinding molar mass starts with units of grams per mole (g/mol). This site explains how to find molar mass. The reason is that the molar mass of the substance affects the conversion. To complete this calculation, you have to know what substance you are trying to convert. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.Ī common request on this site is to convert grams to moles. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass. The molar mass of a substance tells you how much one mole of that substances. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. So, the molar mass of carbon dioxide is 44.01 g/mol. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. These relative weights computed from the chemical equation are sometimes called equation weights. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.įormula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. (Molar mass of CO2 44.0 g mo- (A) 1.00x 1024 (B) 6.80x1023 (C) 6.02x1023 (D) 3.40x 1023 This problem has been solved Youll get a detailed solution from a subject matter expert that helps you learn core concepts. Grams Co2 to moles, or enter other units to convert below: Enter two units to convert From: You can do the reverse unit conversion from ![]()
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