One standard atmosphere equals 14.7 psi (29.92 in. -Hg). Any fraction of an atmosphere is a partial vacuum and equates with negative gauge pressure. A torr is defined as 1/760 of an atmosphere and can also be thought of as 1 mm-Hg, where 760 mm-Hg equals 29.92 in. -Hg.
Q. What are the SI unit rules?
What are the rules (sign conventions) to use S.I units?
- Those units which are named after the name of scientists are always written with their first or initial letter being non-capitalized.
- The symbols used for the units which are named after the name of any scientist should be written by a capital letter.
Q. What is cm Hg?
Centimeters of Mercury is a small pressure unit which represents the pressure pushing down due to gravity of any volume of liquid mercury which is 1cm high. 1 centimeter of mercury at zero degrees Celsius equals 1333.22 pascals.
Q. How do you convert inHg to MMHG?
inHg to mmHg Conversion Table
- 1 mmHg = 133.322 pascals (Pa)
- 1 inHg = 3386.39 pascals (Pa)
- mmHg value x 133.322 Pa = inHg value x 3386.39 Pa.
- mmHg value = inHg value x 25.4.
Q. How do you convert mm to PSI?
1 kilogram per cubic meter (kg/m3) = 0.43 psi per 1000 feet (psi/1000 ft)
Q. How many inches is mmHg?
| conversion result for two pressure or stress units: | ||
|---|---|---|
| From unit Symbol | Equals Result | To unit Symbol |
| 1 inch of mercury inHg | = 25.40 | millimeters of mercury mmHg |
Q. How do you convert millibar to inches?
To convert millibars to inches of mercury, multiply the millibar value by 0.0295301.
Q. How do you convert inches to atmospheric pressure?
To convert 28 inches of mercury to atmospheres, divide 28 by the 29.92. This yields a result of 0.936 atmosphere. To convert back to inches, multiply 0.936 by 29.92. The conversion requires adjustment at temperatures higher or lower than zero degrees Celsius.
Q. What does mmHg mean in chemistry?
A more reliable and common unit is millimeters of mercury (mmHg), which is the amount of pressure exerted by a column of mercury exactly 1 mm high.
