Question

The density of hydrogen is approximately 9 × 10-5 , while the density of helium is approximately 2 × 10-4 . Which of the following is true?

Answer 1

Answer:

Density of Hydrogen = $9\times 10^{-5}$

Density of Helium = $2\times 10^{-4}$

Now ratio of the densities = $\frac{\text{Density of Helium}}{\text{Density of Hydrogen}}$

= $\frac{2\times 10^{-4}}{9\times 10^{-5}}$

= 0.22×$10^{5-4}$

= 2.2

Density of Helium = 2× Density of Hydrogen

Therefore, density of Helium is approximately 2 times the density of Hydrogen.

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