Photos IV O2

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Iv o2. Mno2 + h2 = MN + h20. Mn2 =mn02. MN+h2o=h MNO h2. H2mno4+h2s208.
Mno2 + h2 = MN + h20. Mn2 =mn02. MN+h2o=h MNO h2. H2mno4+h2s208.

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