# Compressibility

Written by Jerry Ratzlaff on . Posted in Thermodynamics

The compressibility factor is a dimensionless factor independent of the quantity of gas and determined by the character of the gas, the temperature, and pressure.

• Abbreviated as $$\beta$$ (Greek symbol beta) compressibility
• Abbreviated as Z (compressibility factor)

## formula

$$Z=\frac{P \cdot V}{n \cdot R \cdot T}= frac{M \cdot p_a \cdot V}{m \cdot R \cdot T}$$

Where:

$$p_a$$ = absolute pressure

$$V$$ = volume

$$n$$ = moles

$$m$$ = mass

$$M$$ = molecular mass

$$T$$ = temperature

$$R$$ = universal gas constant