I have few questions regarding mercury vapor, except those related to health hazards. What is the mean molecular speed of mercury vapor at room temperature and speed of sound in a pure mercury vapor also at room temperature? Also, for the same density of air at seal level, can mercury vapor attain significantly closer to ideal gas conditions? I initially googled this up and found no answers. I am a mfg engineer and I had no idea how to calculate it so I'll just ask here so hope to get help. Pardon me if I made this thread in the wrong sub forum as these questions can also be answered in chemistry-related topics, but I saw 'molecules', particles, etc under these subforum and maybe answer my questions better. Thanks!