How to Switch From Pressure to Volume While Pumping
- 1). Note the pressure of the gas that you are pumping. For example, suppose that the pressure is 5,000 kilopascals (kPa).
- 2). Divide this pressure by atmospheric pressure, which is 101.3 kPa. With this example, 5,000 divided by 101.3 is 49.36.
- 3). Multiply this gas's compressed volume by this factor. For example, if the gas's compressed volume is 1.5 cubic feet, 1.5 times 49.36 is just over 74 cubic feet. This is the gas's volume after you have pumped it.
