How do ypu determind the mass of a mole of a compound?
Step 1: observe the formula for that compound. Count up the
number of elements in the formula of each component element.
Step 2: look at the periodic table. Multiply the elements'
atomic masses by the number of them in the formula.
Step 3: add it all up. That's the mass of 1 mole of that
compound. It's called the compound's "molar mass" and the correct
unit is grams per mole (g/mol).
Example: K3PO4 (potassium phosphate). 3 potassiums at 39 each, 1
phosphorus at 31, and 4 oxygens at 16 each = 212g/mol.