问:人们从实验中知道,在室温情况下,气体分子的热运动平均速度接近于声速,也就是说每秒分子平均要经过300多米的路程。应当说分子的这个速度在我们日常生活中确实是很大的了。然而,你可能也有这样的经验,若在一间40平方米的客厅里,打开香水瓶的盖子,则需要经过几分钟的时间香水分子才会弥漫整个房 Q: People know from experiments that, at room temperature, the average speed of thermal motion of gas molecules is close to the speed of sound, which means that the average molecular distance per second is more than 300 meters away. It should be said that this speed of the molecule is indeed great in our daily life. However, you may also have the experience that if you open the lid of a perfume bottle in a 40-square-meter living room, it takes a few minutes for the perfume molecules to permeate the entire room.