66. Solving a chemistry problem
24. Nitrogen from 0.8880 g of organic matter (for example, flour) is converted into NH3, and the latter is distilled into 20.00 cm3 of 0.2133 N. hydrochloric acid solution, the remaining excess hydrochloric acid is titrated 5.50 cm3 0.1962 N. NaOH solution. Determine the percentage of nitrogen in the substance.
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