The nonflamable element used in balloons is Helium, (He).
Yes, helium weather balloons are commonly used.
either for balloons, or whip it's.
Hot air balloons are now mostly used for leisure
I think balloons were used to find the location of the enemies.
Yes. In WW2 barrage balloons were used to protect cities from aircraft bombardment.
You can buy discounted balloons at baloonworld dot com. They have balloons of all shapes and sizes and can be used in various forms. They even have hot air balloons too.
helium
Hot air is used for hot air balloons.
Personalized birthday balloons can be found at Party City, Fast Balloons, Balloons Tomorrow, Zoom Balloon and 1-800-Balloons. Personalized balloons at Party City can range from $3.99 to $9.99.
Helium is used in blimps and balloons. It is the second lightest element to hydrogen, which is not used because it is highly flammable.
Helium is the most used gas for balloons; sometimes hot air and rarely hydrogen.