Images C2H4 H2O

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C2h4 h2o. 2naoh. Цепочка na na2o2 na2o NAOH nahco3. Na2o2+nahco3. H2o химические свойства.
2naoh. Цепочка na na2o2 na2o NAOH nahco3. Na2o2+nahco3. H2o химические свойства.

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