How much filtered 50% NaOH (in mL) must be added to 2.0liters of boiled deionized water to give an approximately 0.18 M solution of carbonate-free NaOH (40.0 g/mol)? Presume the density of the 50% solution is 1.0 g/mL.
Neglect the change in volume cause by addition of the 50% NaOH solution