Homework Help: chemistry

Posted by denis on Monday, October 31, 2011 at 7:26am.

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

chemistry - Dr Russ, Monday, October 31, 2011 at 9:02am
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)

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