There
are a number of ways to express concentration of a solution. This includes
molarity. Molarity is expressed as the number of moles of solute per volume of
the solution. We calculate as follows:
0.050 M = 0.050 mol / L solution
Moles Ba(OH)2 = 0.050 mol / L solution (1 L solution ) = 0.050 mol Ba(OH)2