a lot.
babab
Weather balloons typically stay aloft in the atmosphere for about 12 to 24 hours before they burst and fall back to the ground.
There is no weight in an empty balloon. Empty balloons will not stay on the ground long enough to have any real weight.
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Air can escape from the ballons even if there aren't holes in them.
hot air rises
To create a long-lasting display using permanent balloons, consider using high-quality, durable balloons made of materials like Mylar or foil. These balloons are less likely to deflate quickly compared to traditional latex balloons. Additionally, you can fill the balloons with a mixture of helium and a special gas called Hi-Float, which helps them stay inflated for a longer period of time. Finally, ensure that the display is kept in a cool, dry place away from direct sunlight and sharp objects to prevent damage and prolong its lifespan.
There are a variety of balloons available, including latex balloons, foil (mylar) balloons, helium balloons, air-filled balloons, water balloons, and LED light-up balloons. Each type serves different purposes, from decorations to entertainment.
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They can stay up to 3-4 hours.
Ask someone else.
Hydrogen gas is used to fill balloons because it is lighter than air, making the balloons float. This property of hydrogen allows balloons to rise and stay aloft in the air. Additionally, hydrogen is a readily available and inexpensive gas for filling balloons.