The densities of two gases X and Y are 0 5gdm-3... - JAMB Chemistry 2017 Question

The rate of dimension of a gas inversely proportional to the square root of its molecular mass or its density, which is Graham's Law of diffusion of gas.

R ∝ (\frac{1}{\sqrt{Mm}}) or R ∝ (\frac{1}{\sqrt{D}})

Dx = 0.5gdm^-3, Dy = 2gdm^-3

R= (\frac{K}{\sqrt{D}})

R(\sqrt{D}) = k

R₁(\sqrt{D_1}) = R₁(\sqrt{D_2})

R_x(\sqrt{D_x}) = R_y(\sqrt{D_y})

(\frac{R_x}{R_y}) = (\frac{\sqrt{D_y}}{\sqrt{D_x}})

= (\frac{\sqrt{2}}{\sqrt{0.5}})

= 2.0