Example 3: When 2 grams of NaCl (molecular weight 58.44 g mol -1) is dissolved in 100 mL of solute, what is the molarity of the solution? 5 February 2013 | Example 3: When 2 grams of NaCl (molecular weight 58.44 g mol -1) is dissolved in 100 mL of solute, what is the molarity of the solution?