Enter the pressure, volume, number of moles, and temperature into the calculator to determine the compressibility factor of a non-ideal gas.

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## Compressibility Formula

The following formula is used to calculate the compressibility factor of a gas.

Z = P * V / (n * R * T)

- Where Z is the compressibility factor
- P is the pressure (pascals)
- V is the volume (m^3)
- n is the number of moles
- R is the gas constant (8.31432*10^3)
- T is the temperature (K)

## Compressibility Definition

Compressibility, in this case the compressibility factor, is defined as the rate at which a material changes in volume under a force or pressure.

## Compressibility Example

How to calculate compressibility?

**First, determine the pressure.**Measure the pressure acting on the material.

**Next, determine the volume of the material.**Calculate the total volume of the gas under that pressure.

**Next, determine the number of moles.**Calculate the total number of moles of the gas.

**Next, determine the temperature.**Calculate or measure the temperature of the gas.

**Finally, calculate the compressibility factor.**Calculate the compressibility factor using the equation above.

## FAQ

**What is compressibility?**

Compressibility is a measure of a material or gasses ability to compress under a certain force or pressure.

**What is the compressibility factor?**

This factor is a ratio of the pressure and volume to the moles and temperature of a gas. It represents the compressibility of a gas.

**How is compressibility calculated?**

Compressibility is calculated using the ideal gas formula and re-arranging the values to create a ratio.