Answer:
Option D.
Step-by-step explanation:
Density of Hydrogen = [tex]9\times 10^{-5}[/tex]
Density of Helium = [tex]2\times 10^{-4}[/tex]
Now ratio of the densities = [tex]\frac{\text{Density of Helium}}{\text{Density of Hydrogen}}[/tex]
= [tex]\frac{2\times 10^{-4}}{9\times 10^{-5}}[/tex]
= 0.22×[tex]10^{5-4}[/tex]
= 2.2
Density of Helium = 2× Density of Hydrogen
Therefore, density of Helium is approximately 2 times the density of Hydrogen.
Option D is the answer.
