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## Pressure

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**Pressure**force applied OVER an area**Barometers**the measure ATMOSPHERIC pressure**Manometers**measure the pressure an of ENCLOSED gas vacuum BEFORE AFTER**Pressure Units**atmospheres (atm) kilopascals (kPa) millimeters of mercury (mm Hg) pounds per square inch (psi) Torricelli units (torr)**STP**standard TEMPERATURE 273 K and PRESSURE 1 atm**Conversions**• 1 atm • 760 mm Hg • 101.3 kPa • 14.7 psi • 760 torr**Pressure Practice**• 1) Convert 125 mmHg to atmospheres.**Pressure Practice**• 2) Convert 3.20 atm to kilopascals.**Pressure Practice**• 3) Convert 5.38 kPa to millimeters of mercury.**Pressure Practice**• 4) Convert 459.33 torr to Pascals.**Pressure Practice**• 5) Convert 45 atm to mmHg.**Pressure Practice**• 6) Convert 302.0 kPa to mmHg.**Pressure Practice**• 7) Convert 765 mmHg to kPa.**Pressure Practice**• 8) Convert 25.0 atm to kPa.**Pressure Practice**• 9) Convert 901 mmHg to atm.**Pressure Practice**• 10) Convert 345 kPa to atm.