49. Решение задачи по химии №004 914

4. To a sample of ammonium chloride weighing 1.000 g was added 20.00 cm3 of 0.100 M sodium hydroxide solution, the excess of which was titrated with 10.0 cm3 of 0.050 M hydrochloric acid solution. Calculate the mass fraction of ammonia in the sample.

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