The most complex organic
compounds are the.

i-propyl cyanide

Explanation:

But i-propyl cyanide is the largest and most complex organic molecule found to date - and the only one to share the branched atomic backbone of amino acids. "The idea is to know whether the elements that are necessary for life to occur… can be found in other places in our galaxy."

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate

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