How to figure out molar mass of an element. Take a look at naoh which contains sodium oxygen and hydrogen. Finding the molar mass of a single element is really simple. Multiply the subscript number of atoms times the atomic mass of that element and add the masses of all of the elements in the molecule to get the molecular mass.
Molar mass usually is expressed in grams g or kilograms kg. To calculate the molar mass of an element find the relative atomic mass of that element then multiply the relative atomic mass by the molar mass constant. All you need to do is find the atomic mass of the element on the periodic table and report the number with the unit grams per mole or gmol.
To calculate the molar mass of a compound calculate the molar mass of each element in the compound then multiply the elements atomic mass by the number of atoms of that element in the compound. Adding them together yields.
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