What is the mass of 1 mol of an element?

2 Answers
Aug 28, 2017

It is the molar mass of the element.


The molar mass of an element is its atomic weight (relative atomic mass) on the periodic table in grams/mole, or g/mol.

For example, the atomic weight of oxygen (O) on the periodic table is #"15.999 u"#, and its molar mass is #"15.999 g/mol"#.

Aug 28, 2017

It is the atomic weight in grams for the metric system.


The "mass" of an element is based on a comparison to an accepted standard mass, and may also be subject to the averaging of variations in normal isotopes of an element.

The "mol" is simply a number of units as derived by Avogadro to be #6.022 xx 10^23# units/mol. Thus, each element will have a different mass for the same number of moles.

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