阿摩線上測驗
24. The chemical formula Al2O3 indicates:
(A) two atoms of aluminum and three atoms of oxygen.
(B) three atoms of aluminum and two atoms of oxygen.
(C) six atoms of each element.
(D) five atoms of each element.
答案：登入後查看
統計： A(6), B(0), C(0), D(2), E(0) #3577913
統計： A(6), B(0), C(0), D(2), E(0) #3577913
