Ideal Gas Law

$PV=nRT$

• $P$ is pressure
• $V$ is volume
• $n$ is the number of moles of the gas
• $R$ is the R
• $T$ is the temperature of the gas

Statistical Mechanics

$PV=N{k}_{B}T=N\tau$

• $N$ is the number of particles
• $k_B$ is the Boltzmann Constant
• Can be derived by Equipartition Theorem and Virial Theorem: