Why are balloons made of rubber ?
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Explanation:
When rubber or plastic balloons are filled with helium so that they float, they typically retain their buoyancy for only a day or so, sometimes longer. The enclosed helium atoms escape through small pores in the latex which are larger than the helium atoms.
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Answer:
BCOZ when we put air in balloons it's bigger because of this reason balloons are made of rubber
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