Unit Conversions

 Abbreviations atm - atmosphere mm Hg - millimeters of mercury torr = mm Hg Pa - Pascal (kPa = kilo Pascal oC  - degrees Celsius oK  - degrees Kelvin Conversions oK = oC + 273 1 cm3 = 1 mL (milliliter) 1dm3(cubic decimeter) = 1 L = 1000 mL 0.00 oC = 273 oK 1.00 atm = 760.0 mm Hg = 1.01.325 kPa
 Standard conditions 0.00oC = 273oK 1 atm = 760.0 mmHg = 101.325 kPa = 101,325 Pa
• Example conversions:
• Between atm & mmHg
• Conversion of 0.92 atm to mmHg--
• multiply the atm value by 760 mmHg/atm or [0.92atm x 760.0 mmHg/atm]; the atm units cancel leaving mmHg
• Conversion of 735.5 mmHg to atm--
• divide the mmHg value by 760 mmHg / atm or [735.5 mmHg / (760 mmHg/atm)]
• Between atm & kPa
• Recalling that 1 atm = 101.324 kPa,  convert 0.934 atm to kPa--
• multiply the atm value by 101.324 kPa / atm or 0.934 atm x 101.325 kPa/atm
• Recalling that 1 atm = 101.324 kPa, convert 93.45 kPa to atm--
• divide the kPa value by 101.325 kPa / atm or 93.45 kPa/ 101.325 kPa / atm
• Between mmHg & kPa
• Recalling that 760.0 mmHg = 101.325 kPa, convert 730 mmHg to kPa--
• 730 mmHg x (101.325 kPa / 760 mmHg); the mmHg units cancel resulting in kPa as the final unit
• Recalling that 760.0 mmHg = 101.325 kPa,  convert 98.234 kPa to mmHg---
• 98.234 kPa x (760 mmHg/101.325 kPa)