题目

下列气体所含分子数最多的是                                                     （     ） AA.7.5g C2H6                  B.14g N2          C.7g CO                    D.24g O2 答案：  AEvery one of you is looking forward to a good result. Better think carefully before writing down your answers. Wish you success!A. get B. got C. getting D. to get