1. Vitamin C contains the elements C, H, and O. It is known to contain 40.9% C and 4.58% H by mass. The molar mass of vitamin C has been found to be about 180. The molecular formula for vitamin C is
(A) C2H3O2
(B) C3H4O3
(C) C4H6O4
(D) C6H8O6
(E) none of these
答案:登入後查看
統計: 尚無統計資料
統計: 尚無統計資料