# What is the equation of gas in terms of pressure (P), absolute temperature (T) and density (d)?

Mar 14, 2017

The Ideal Gas equation........

#### Explanation:

$P V = n R T$, and thus $\frac{P}{R T} = \frac{n}{V}$

But $n = \text{mass"/"molar mass}$,

And thus $\frac{P}{R T} = \frac{\text{mass"/"molar mass}}{V}$

And finally, $\frac{P}{R T} \times \text{molar mass"="mass"/V=rho_"gas}$