1) Has a general formula CnH2n-2 a) alkane b) alkene c) alkyne d) benzene 2) Widely used as solvents, with a general formula R-OH a) alcohol b) ketone c) aldehyde d) carboxylic acid 3) What is the functional group which is present in vinegar? a) Amine b) Amide c) Carboxylic acid d) Ester

순위표

비주얼 스타일

옵션

템플릿 전환하기

자동 저장된 게임을 복구할까요?