yes it will, but not by much
No, helium has weight, but it rises when its in an expandable container such as a balloon because it is lighter than the nitrogen rich atmosphere but inside of a rigid container the helium can only add weight. (see the mythbuster's episode about the helium football)
Helium.
Helium is lighter than air
Hydrogen is lighter than Helium.
Helium is a gas that is weightless, odourless, and would make a barrel lighter.
If you fill your backpack with helium, it makes your backpack lighter. So whenever you go hiking be sure to put some helium in your pack.
helium
Helium
yes. helium is lighter than earth or even air.
A helium tank is something used to blow balloons and if you put it in your mouth it will make your voice sound squeaky It also is very dangerous at times. it is possible that it can explode if put near fire or heat. BE VERY CAUTIOUS!!!!!!!!!!!!
That all depends how much helium you put in it. A basketball should be able to take the same amount of pressure, whether it's pressure from air or helium. So, if you inflate it only to the recommended pressure, it should be a problem. The same amount of pressure of helium will be less mass, so in the end the basketball will be lighter, as you would probably expect, by a very small amount.
its the 2nd element on the periodic table and it makes things lighter, such as helium balloons, which float as helium is lighter than air