What does the mass percent of an element tell you about a molecule

Mass percent of an element tells you what kind of elements are present in a molecule and what are the levels of each element which contribute to the total molecular mass of the molecule.

There is a formula to calculate the mass percent for each element:

% mass = (mass of element in 1 mole of the compound) / (molar mass of the compound) x 100%

The units of mass percent are usually grams.

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