Answer:
It is weightless, you can see it. If you put it in a barrel it will make it lighter?
What word in the English language uses all five vowels plus Y in alphabetical order, and uses each only once?
I look at you, you look at me, I raise my right, you raise your left.
A building where people and stories are on stage
A doctor might remove one from the neck of a Dracula victim.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?