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3. A solution of NaOH is prepared. 6.1 ml of a 50% (by weight) NaOH concentrated stock solution is poured into a plastic bottle

3. A solution of NaOH is prepared. 6.1 ml of a 50% (by weight) NaOH concentrated stock solution is poured into a plastic bottle and diluted to 1000 ml. The density of the 50% stock solution is 1.53 g/ml. What is the concentration in mol/L of the final solution ?

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