What is the relationship between density and molecular weight of a substance?

Feb 1, 2016

$D = \frac{n \times M M}{V}$
The density $D$ is calculated by: $D = \frac{m}{V}$.
The relationship between the mass $m$ and the molecular weight $M M$ is the following: $n = \frac{m}{M M} \implies m = n \times M M$, where, $n$ is the number of mole of the substance in question.
Therefore, $D = \frac{n \times M M}{V}$.