Images NA H2

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Na h2. 2hs+o2 =2h2o+2s. Na2s + h2s + h2o. HS Oh s h2o. Na2s h2o гидролиз.
2hs+o2 =2h2o+2s. Na2s + h2s + h2o. HS Oh s h2o. Na2s h2o гидролиз.

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