posted by denis .
what is the molarity of a solution prepared by dissolving 2.24 grams of NaOH in enough deionized water to obtain 500.0ml of solution?The molar mass of NaOH is 40.0g
Molarity = number of moles/total vol (L)
number of moles = 2.24 g/40.0 g mole^-1
volume = 0.5000 L
hence calculate molarity (take care with sig figs)