April 2022 0 8 Report
Чуваки, спасайте. Химия, 8 класс, даю 35 баллов К 260г раствора с массовой долей гидроксида натрия 10% добавили 20г гидроксади натрия. Вычислите массовую долю NaOH в полученном растворе.
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