Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
이 화합물은 불용해성 때문에 물에 녹지 않습니다.i hwahapmul-eun bul-yong-hae-seong ttaemune mul-e nokji anhseubnida.This compound does not dissolve in water due to its insolubility.