July 2022 1 4 Report
Выпишите формулы веществ, которые относятся к алкенам.
Формулу этена пдчеркните:
а) СН(три чёрточки) СН
б) С2Н4
в) СН3-СН3
г) Н3С-СН2-СН2-СН3
д) СН2=СН-СН2-СН3
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