78. Solving a chemistry problem

78. Solving a chemistry problem

2. A sodium hydroxide solution of unknown concentration is diluted with water and brought to the mark in a 250 ml volumetric flask; 19 ml of nitric acid solution with a titer of 0.02144 g/ml for NaOH are used to titrate 20 ml of the resulting solution. Calculate the mass of NaOH in the initial solution and the normality of the initial solution.

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