# Determining the Pressure of Compressed Gas Using Boyle's Law

How can we use Boyle's law to determine the pressure of compressed gas in a syringe?

Boyle's Law states that the pressure of a gas is inversely proportional to its volume, as long as the temperature remains constant. When a gas is placed in a syringe and the volume is reduced by pressing the plunger, we can use Boyle's law to calculate the new pressure of the compressed gas.

## Boyle's Law Formula

**Boyle's Law formula can be expressed as:**\[P_1V_1=P_2V_2\] Where: - \(P_1\) = Initial pressure of the gas - \(V_1\) = Initial volume of the gas - \(P_2\) = Final pressure of the gas - \(V_2\) = Final volume of the gas