The mass in grams of 1
mole of a compound is equal to
the mass in grams of the components.
Molar
Mass (Molecular Weight)
H2O MW = 2(1.008) + 15.999 g
AlCl3 MW = 26.98 + 3(35.45) g
(Note:
The Significant Figures.)
So the
mass in grams of 1 mole of each compound isÉ