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The molar mass of NaNO3 is equal to the sum of the molar masses of all the elements that make up one molecule of the compound. To find the masses of these elements, consult the Periodic Table. The molar masses of Sodium, Nitrogen and Oxygen are 22.99, 14.01 and 16 grams, respectively. To find the molar mass of NaNO3, add the molar masses of all the atoms used in the compound 22.99g + 14.01g + (3 x16g), which is equal to 85g.
1 Mole = 6.02 x 1023 1 mole of atoms = 6.022 x 1023 atoms 1 mole of molecules = 6.022 x 1023 molecules Molar Mass: the mass (in grams) of one mole a particular substance There is a unique relationship between molar mass and atomic weight: Oxygenâs atomic weight is 16.00 amu. 1 mole of oxygen is 6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g What is the molar mass (g/mole) of oxygen? 16.00 amu/oxygen atom x 1.661 x 10-24g/amu = 2.657 x 10-24 g/atom x 6.02 x 1023 atoms/mole =16.00 g/mole Molar mass (in grams) is always equal to the atomic weight of the atom! Molar mass (in grams) is always equal to the atomic weight of the atom! Examples: Atomic weight of carbon is 12.01amu Molar mass of carbon is 12.01 g/mol Atomic weight of helium is 4.00 amu Molar mass of helium is 4.00 g/mol Mole (mol): The number of particles (atoms or molecules) in a sample of element or compound with a mass in grams equal to the