It is denoted mmHg or mm Hg.. Some of our calculators and applications let you save application data to your local computer. Millimeters of mercury is a non-SI unit of Pressure. CheckYourMath.com requires javascript to work properly. We don't save this data. Millimeters of mercury is a non-SI unit of Pressure. You can target the Engineering ToolBox by using AdWords Managed Placements. The symbol for millimeters of mercury is mmHg. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience. n. The temperature and pressure at which a substance can exist in equilibrium in the liquid, solid, and gaseous states. Select one of the mmHg conversions below: This table provides a summary of the Pressure units within their respective measurement systems. Critical Temperatures and Pressures for some common substances. It is equal to a pressure of 133.3224 pascals or 0.00131579 atmospheres. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! The triple point is not the same as the critical point. We don't collect information from our users. The triple point of pure water is at 0.01 degrees Celsius and 4.58 millimeters of mercury and is used to calibrate thermometers. 1 mmHg is also equal to 1 Torr. Although not an SI unit, the millimetre of mercury is still routinely used in medicine, meteorology, aviation, and many other scientific fields. Select a conversion type and the desired units. Two geometrical configurations of the sample are compared and the effect of impurities considered. The pressure dependence of the melting point, using small samples, was found to be 4.8 + 0.2 mK bar- 1, corresponding to a difference of 4.8 mK between the normal 190 E. M ~ndez-Lan9o, J. Ancsin/Thermochimica Acta 287 (1996) 183-190 melting and triple points. Triple point:  The combination of the temperature and the pressure at which the three phases (gas, liquid, and solid) of a substance coexist in thermodynamic equilibrium. The triple point of water is 273.16 K at 611.73 Pa. Google use cookies for serving our ads and handling visitor statistics. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. All rights reserved. See also Critical Temperatures and Pressures for some common substances. Presented at the 50th Calorimetry Conference 1995. It is equal to a pressure of 133.3224 pascals or 0.00131579 atmospheres. Sometimes only the term triple point is used, which refers to both the temperature and the pressure at which the three phases co-exist in equilibrium. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Copyright © 2020 Elsevier B.V. or its licensors or contributors. The triple point and melting point of mercury were studied by continuous melting and adiabatic calorimetry techniques. We use cookies to help provide and enhance our service and tailor content and ads. AddThis use cookies for handling links to social media. By continuing you agree to the use of cookies. The symbol for millimeters of mercury is mmHg.

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