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Ph3 o2 p. Mg3n2 h20. X1 cr2o3 t x2 ch2 ch2 h3po4 этилбензол. P mg3p2 ph3. MG Oh 2 nh3 mg3n2 h2o.
Mg3n2 h20. X1 cr2o3 t x2 ch2 ch2 h3po4 этилбензол. P mg3p2 ph3. MG Oh 2 nh3 mg3n2 h2o.

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