阿摩線上測驗
22. Which of the following statements are true?
I. Models are always wrong unless they are proved by a theory.
II.Elements, such as lead, are made of tiny particles that mostly consist of open
space.
III. The air you breathe is an example of a heterogeneous mixture.
IV. Because NH3 always contains the same relative numbers of atoms, it will
always contain 4.6 g of nitrogen for every 1.0 g of hydrogen.
(A) II only
(B) II, IV
(C) I, II, IV
(D) I, III
答案：登入後查看
統計： A(0), B(4), C(2), D(2), E(0) #3577911
統計： A(0), B(4), C(2), D(2), E(0) #3577911
