Question

Derive the relation between density and relative density.

Answer 1

The density of a substance difined as the mass per unit volume if that substance.while relative density of a substance is defined as the ratio of the density of the substance to the density of water.

Answer 2

Answer:

Vapor density of gas = Molar mass of gas / 2

Explanation:

Vapor density of gas = Density of gas / density of standard gas

standard gas ⇒ hydrogen

Vapor density of gas = Dgas / DH₂    {D ⇒ density}

density = mass / volume

VD of gas = mass of certain volume of gas / mass of some volume of H₂

                  = mass of 22.4L of gas @ STP/ mass of 22.4L of H₂ @ STP

mass of 22.4L of gas @ STP = Molar mass of gas

VD of gas = Molar mass of gas / Molar mass of H₂

VD of gas = Molar mass of gas / 2