Calcolatore Cammino Libero Medio — Formula
## Gas Density from Ideal Gas Law
### Formula
**d = PM / (RT)**
Where:
- **d** = density (g/L)
- **P** = pressure (atm)
- **M** = molar mass (g/mol)
- **R** = 0.08206 L·atm/(mol·K)
- **T** = temperature (K)
Derived from PV = nRT by substituting n = mass/M and d = mass/V.
### Formula
**d = PM / (RT)**
Where:
- **d** = density (g/L)
- **P** = pressure (atm)
- **M** = molar mass (g/mol)
- **R** = 0.08206 L·atm/(mol·K)
- **T** = temperature (K)
Derived from PV = nRT by substituting n = mass/M and d = mass/V.
Esempio Risolto
Calculate the density of air (avg M = 28.97 g/mol) at 1 atm and 273.15 K.
- d = PM / (RT)
- d = (1)(28.97) / (0.08206 × 273.15)
- d = 28.97 / 22.414
- d = 1.292 g/L