How many milliliters of 5 M NaCl are required to prepare 1500 mL of 0.002 M NaCl? What will be the concentration of the diluted solution expressed in millimolars, micromolars, and nanomolars?
A solution contains 15 g of CaCl2 in a total volume of 190 mL. Express the concentration in terms of grams/liter, % w/v, molars and millimolars.