Ch. 10
Definitions
6.02 x 10^23
Percent Composition
Mole
Number of particles in one mole.
The SI unit used to measure the amount of a substance.
9% composition
the percent by mass of each element in a compound.
Empirical Formula
The smallest whole number ratio of the atoms in a compound.
Molecular compound
Shows the actual number of each element.
Molar Mass
Physical property defined as the mass of a given substance.
Mass of AlCl3
132g
Mass of (NH4)2co3
96g
Empirical Formula
Fe2O3
CuN2O6
Cl5Br3
Magnesium Hydroxide
%mg 41%
%O 55%
%H 3%
Ba(NO3)2
%Ba 52%
%N 11%
%O 37%