September 2021 0 14 Report
 помогите с химией срочно: для образования средней соли к раствору серной кислоты объёмом 40 мл( p=1,025 г/см3) оказалось достаточным добавить 43,2 мл 7,4%-го раствора KOH (p=1,06 г/см3). Вычислите массовую долю серной кислоты в растворе.
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