The density of a gaseous element is 5 times that of oxygen under similar conditions. If the molecule is triatomic, what will be its atomic mass ?

The vapour density of a gaseous element is 5 times that of oxygen. If the element be triatomic, find its atomic mass.

Under same conditions of temperature and pressure the vapour density of an elementary gas is 5 times than that of oxygen. Calculate the relative atomic mass of the gas if it is diatomic in nature.

Helium diffuses 4 times faster than an unknown gas under similar conditions. Find the vapour density of unknown gas.

Name a gaseous element whose molecule and atom are identical.

A fluoride of phosphorous in gaseous state was found to diffuse 2.12 times more slowly than nitrogen under similar conditions. Calculate the molecular mass and molecular formula of this fluoride which contains one atom of phosphorous per molecule.

A fluoride of phosphorous in gaseous state was found to diffuse 2.12 times more slowly than nitrogen under similar conditions. Calculate the molecular mass and molecular formula of this fluoride which contains one atom of phosphorous per molecule.