if u've watched the video "Chemicals react" (it's পোষ্ট হয়েছে on this club) can someone tell me what issues are 2:25 and 2:41? pleeeeeeeeeeeeeeeeeeeeez?

i'll give 5 শ্রদ্ধার্ঘ্য to the first person to answer this প্রশ্ন

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but don't just answer "idk" অথবা things like th@...thx!:)

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