Photos K O2

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K o2. Cr2o3 + co = CR + co2. CR К 3o2 г 2cr2o3 к. Br2 br- cr2o7 CR+3. Cr203 co2.
Cr2o3 + co = CR + co2. CR К 3o2 г 2cr2o3 к. Br2 br- cr2o7 CR+3. Cr203 co2.

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