››Percent composition by element
Element Symbol Atomic Mass # of Atoms Mass Percent
SodiumNa22.989770127.367%
HydrogenH1.0079411.200%
CarbonC12.0107114.297%
OxygenO15.9994357.136%

››Similar chemical formulasNote that all formulas are case-sensitive.Did you mean to find the molecular weight of one of these comparable formulas?NaHCO3NaHCo3


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››More information onmolar mass and molecular weight

In chemistry, the formula weight is a amount computed by multiplying the atomic weight (in atomic mass units) of each facet in a chemical formula by the number of atoms of that aspect current in the formula, then including all of these assets together.

Formula weights are especially useful in determining the family member weights of reagents and also assets in a chemical reaction. These relative weights computed from the chemical equation are sometimes called equation weights.

Using the chemical formula of the compound and the routine table of elements, we deserve to include up the atomic weights and also calculate molecular weight of the substance.

A common research on this website is to convert grams to moles. To complete this calculation, you need to understand what substance you are trying to transform. The reason is that the molar mass of the substance affects the convariation. This website explains how to uncover molar mass.

Finding molar mass starts through units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is sindicate the weight in atomic mass systems of all the atoms in a offered formula.

If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any kind of atom or group of atoms in a compound have the right to be computed by dividing the full weight of the atom (or group of atoms) in the formula by the formula weight and also multiplying by 100.

See more: Which Of The Following Phrases Best Describes The Meaning Of Suburban Decay? ?

The atomic weights provided on this site come from NIST, the National Institute of Standards and also Technology. We use the the majority of widespread isotopes. This is how to calculate molar mass (average molecular weight), which is based upon isotropically weighted avereras. This is not the same as molecular mass, which is the mass of a solitary molecule of well-characterized isotopes. For mass stoichiometric calculations, we are commonly determining molar mass, which might likewise be dubbed standard atomic weight or average atomic mass.


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