Consider a sample fo oxygen at 300K. Find the average time taken by a molecule to travel a distance equal to the diameter of the earth.

Explanation

`V_avg = (sqrt (8RT))/(sqrt(piM)) = (sqrt(8 xx 8.83 xx 300))/(sqrt(3.14 xx 0.032))`
` = 445.25 m/s`
` T = (distance/ speed) =(6400000 xx 2 sec)/(445.25)`
`=28747.83 hrs/3600`
` =7.985 hrs =8 hrs.`