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Ch3ch2ch2cl+cu спирт. Ch4-c2h2-бензол-бензол сh3cl-c3h3-c3h6-c3h7cl. Ch3 ch2 ch2 ch3 br2 свет. C2h6 br2 свет.
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E n c h y
Naoh h
H410m h
H e 4
Мал h
X h 1
H j s
H 90
H перевод
B 7 h