babab
There is no weight in an empty balloon. Empty balloons will not stay on the ground long enough to have any real weight.
yes dolphins can stay up long because they are like mamals
Air can escape from the ballons even if there aren't holes in them.
hot air rises
helium is generally filled in helium balloons
Ask someone else.
how long does albuterol stay in your system and do it show up in drug test
They can stay up to 3-4 hours.
you can play with them and blow them up and fill them with water and lots of balloons can make you fly
Well, it depends on how many balloons you have. They may be able to pick you up but the helium doesn't last long at all.
they can stay up to 12 months