5.Under the same condition, compare the root mean square (r.m.s.) speed (c), the mean speed (c" ), and the most probably speed (c*) of molecules? (A)c*＞c"＞c (B)c" ＞c*＞c (C)c＞c"＞c* (D)c*=c"=c (E) none of the above answer is correct

3.Which of the following statement is not the assumption of kinetic theory? (A) The gas consists of molecules of mass m in ceaseless random motion (B) The size of the molecules is negligible (C) The molecules do not interact with each other (D) The molecules make perfectly elastic collisions when they are in contact (E) Internal modes of motion are excited when molecules making collision

5.Under the same condition, compare the root mean square (r.m.s.) speed (c), the mean speed (c" ), and the most probably speed (c) of molecules?
(A)c＞c"＞c
(B)c" ＞c＞c
(C)c＞c"＞c
(D)c*=c"=c
(E) none of the above answer is correct

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