Question

The density of air is 0.001293g/ml.Its vapour density is-?

Answer 1

Answer:

The vapour density when the density of air is 0.001293 g/ml is 14.48 gm.

Explanation:

We know that: Molecular Mass= 2x Vapour Density

At STP or under standard conditions of pressure and temperature, 22.4 l of any gas equals to 1 mole.

That is, 1 mole = 22.4  l

The density of air is given as 0.001293g/ml

The volume of gas=22400 ml

We know that mass= density x volume

Therefore, rearranging the above equation, Mass= 0.001293 x 22400= 28.96 g

Also we know that, Molecular Mass= 2 x Vapour Density

Rearranging the equation we get,

Vapour Density= Molecular Mass ÷ 2

=28.96÷2=14.48 gm

Answer 2

Answer:14.3

Explanation:

Density = mass/volume 0.001293 = mass/22400. Mass = 28.96. Vapour density = mass/2. Vapour density = 28.96/2 = 14.4