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what will the balloons be filled with?
Apr 18, 2018

When balloons are inflated,  there are three choices in usual. If  fill the balloons with air, the balloons will not fly up. If fill the balloons with hydrogen,  the balloons will fly up but they are very dangerous, the balloons must be far away from fire in order to avaid exploding. Hydrogen cost is cheaper than helium, but helium is much safer than hydrogen, and balloons can fly up too if fill them with helium.

 

Pls choose fitable gas according to the fact and situation. 


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