Question

Write the relation between molecular mass and vapour density.

Answer 1

Molecular mass $\left(\mathrm{m}\right)$:

• A molecular mass is the sum of the mass of all the atoms in a molecule.
• Adding the atomic masses of all atoms in a molecule gives molecular mass.

Vapor density:

• Vapor density is the density of vapor in relation to the density of vapor of hydrogen.
• It is having a relative value.
• It is unitless.

Relation:

The relation between molecular mass and vapor density is

$\mathrm{Molecular}\mathrm{mass}=2\mathrm{x}\mathrm{vapour}\mathrm{density}$.