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Stating the molar volume of a gas without indicating the reference conditions of temperature and pressure has very little meaning and can cause confusion. The molar volume of gases around STP and at atmospheric pressure can be calculated with an accuracy that is usually sufficient by using the ideal gas law. The molar volume of any ideal gas ...
Until 1982, STP was defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of 101.325 kPa (1 atm). Since 1982, STP is defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of 100 kPa (1 bar). Conversions between each volume flow metric are calculated using the following formulas: Prior to 1982,
The standard temperature and pressure (STP) for gas varies depending on the particular code being used. [1] It is just as important to know the standard pressure as the temperature. Formerly, OPEC used 101.325 kPa (14.696 psia) but now the standard is 101.560 kPa (14.73 psia).
MDSS – measured depth referenced to mean sea level zero datum – "subsea" level; MDT – modular formation dynamic tester, a tool used to get formation pressure in the hole (not borehole pressure which the PWD does). MDT could be run on Wireline or on the Drill Pipe; MDR – mud damage removal (acid bullheading) MEA – monoethanolamine
STP (motor oil company) Segmenting-targeting-positioning, a framework in marketing; Society for Threatened Peoples, an international NGO; Space Test Program, a spaceflight provider for US DoD; Straight-through processing, in securities transaction; Suntech Power (NYSE symbol STP)
RSTP does not do anything differently from STP on shared links. Unlike in STP, RSTP will respond to BPDUs sent from the direction of the root bridge. An RSTP bridge will propose its spanning tree information to its designated ports. If another RSTP bridge receives this information and determines this is the superior root information, it sets ...
Standard cubic feet per minute (SCFM) is the molar flow rate of a gas expressed as a volumetric flow at a "standardized" temperature and pressure thus representing a fixed number of moles of gas regardless of composition and actual flow conditions.
The mean free path of a molecule in a gas is the average distance between its collision with other molecules. This is inversely proportional to the pressure of the gas, given constant temperature. In air at STP the mean free path of molecules is about 96 nm.