0.00996 in scientific notation is 0.0996e-1.
Answer:
Explanation:
c= carbon, h= hydrogen, o= oxygen
A helium balloon displaces the amount of air. The weight of the helium in the balloon + the balloon fabric = lighter than the air that it displaces. Helium is lighter than air, so therefore, if it's in a balloon, the balloon will float.
So, the answer would be 20 cm