Images C2H6 H2

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C2h6 h2. С2н5no2. С6h5no2 h2. C2h6 -h2 реакция. C2h5nh2 hbr.
С2н5no2. С6h5no2 h2. C2h6 -h2 реакция. C2h5nh2 hbr.

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