The atomic mass is the mass of the mass of one atom of an element in ATOMIC MASS UNITS (u). This number can be found on the periodic table.
Example:
The atomic mass of Magnesium is 24.3 u.
The formula mass is the total mass of all atoms in a covalent, organic, or polyatomic compound in ATOMIC MASS UNITS (u).
Example:
The formulas mass of NaCl is: 23.0 + 35.5 = 58.5 u.
Example:
The molecular mass of CO is: 12.0 + 16.0 = 28.0 u.
We now know how to do conversions:
(a) from particles/atoms/formula units/molecules ----> moles
(b) from moles ----> particles/atoms/formula units/molecules
(c) from grams ----> moles
and (d) from moles ----> grams
*With all these conversions, the molar mass is needed.
The molar mass is the same number of the molecular, atomic, or formula masses, except expressed in grams per mole (g/mole).
Mole day is at 6:22 on October 23 (10/23)
