Question

Helium is used to fill balloons because

Answer 1

Helium is used in weather balloons to allow them to float up into the atmosphere sincehelium is less dense than air. Therefore,balloons filled with...Helium ...

Answer 2

$\huge\mathfrak{\underline{\underline{\red{answer}}}}$

If you buy a balloon from a vendor, it's probably filled with helium. This is because helium is less dense. Because helium is lighter than air, a helium balloon rises. Hydrogen is another gas lighter than air; it is even lighter than helium