Question

С C-c-c-c = cC2H CH3​

Answer 1

Ответ:

а что именно нужно сделать?

Answer 2

It seems like you've entered a chemical notation, but the formatting is a bit unclear. Based on what you've provided, it appears to represent a chemical reaction involving the conversion of a compound "C" into another compound "cC2H" with the addition of "CH3" (methyl group). However, the notation is not standard and might be missing some details or context.

If you could provide more information or clarify the notation, I'd be happy to help you understand the chemical reaction or concept you're referring to.