Gravity seems emense in strength of objects with large mass. So how does the earth hold on to air molecules
Are you asking because you don’t know the answer or because you know the answer and you’re seeing if we know?Just for the fun of it: what is the mass of a cubic kilometer of air (normal T and p ) ? One metric tonne, a thousand, or a million ?
That's clever! So the other 20% of elements that air is composed of does not make much of a difference?Ait is mostly nitrogen. Mass of 22.4 liter N2 is 28 gram (standard T p). Let's round off to 22.4 so 1 liter is 1 gram. Now all we have to do is scale up from 1 L (1 dm3) to 1 km3.