61. Solving a chemistry problem
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61. Solving a chemistry problem
2. To determine the total ash and ash insoluble in a 10% hydrochloric acid solution, a sample of St. John´s wort weighing 5.0234 g was taken. The mass of the crucible was 9.2068 g. crucible after treatment with 10% hydrochloric acid solution, burning and calcining to a constant value of 9.2522 g. Does St. 0% and not more than 1.0%)?
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