Short note on mass of air

>Added SPACES and Merged<

Balloons balance

I don't appreciate your running words together, chithraa. Why would you want anyone to take extra time to try and read what you want to know. That as a waste of time.

Tick

Again with your irritating stuff. We have much better things to do with our time here.

Tick

Also, we won't do your homework for you. You're going to have to do the work yourself. We can look at it after you're done, give you hints, but we won't do it for you.