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Vapor Pressure
Vapor Pressure: - A measure of a substance's propensity to evaporate, vapor pressure is the force per unit area exerted by vapor in an equilibrium state with surroundings at a given pressure. It increases exponentially with an increase in temperature. A relative measure of chemical volatility, vapor pressure is used to calculate water partition coefficients and volatilization rate constants. [Environmental Protection Agency] News archive for Vapor Pressure:: |
Ithaca Journal,But when the water is heated and its temperature reaches 212 degrees Fahrenheit, its vapor pressure reaches the pressure of the surrounding air,
NESTE OIL'S INTERIM REPORT FOR JANUARY-JUNE 2008 - Jul 30, 2008
CNNMoney.com...was supported by a more favorable differential between Urals and Brent crude, as well as good margins for low vapor pressure gasoline sold to the US.
Ultra High Vacuum Scanning Electron Microscopy (UHV-SEM ... - Jul 24, 2008
Azom.comIn order to overcome this issue, all materials and components that where not UHV compatible where replaced by low vapor pressure glass, stainless steel
Dow Set to Increase Production Capacity of its High Temperature ... - Jul 30, 2008
Azom.comDOWTHERMâ„¢ RP Heat Transfer Fluid is intended for use in applications that require liquid phase heat transfer with very low vapor pressure at very high
Attractive Forces Between Cation Condensed DNA Double Helices - Jul 29, 2008
RedOrbit,Osmotic pressures of the PEG solutions were measured directly using a Vapro Vapor Pressure Osmometer (model 5520, Wescor, Logan, UT).
Quality at your feet - Jul 14, 2008
Plant Services,Vapor pressure buildup often destroys the surface treatment. Calcium chloride testing reveals the presence of moisture emissions in the slab,
Kentucky's Gas more Expensive than Ohio's: Why? - Jul 30, 2008
WCPO,Ohio now uses a cleaner gas called Low RVP -- Low Reid Vapor Pressure -- gas. However, it does not have to be trucked in, so it costs less.
Too Hot, Humid To Run Too Fast - Jul 8, 2008
The Ledger,Relative humidity may be greater on cool mornings, but what really matters for sweat evaporation is water vapor pressure. And water vapor pressure is lower
Drop in oil prices could reach pump soon - Jul 16, 2008
Kansas City Star,Supplies of gas used in the Kansas City area, which has a slightly different vapor pressure than fuel used in most of the country, have been tight this
Carotenoids of Enhanced Bioavailability - Jul 31, 2008
FLEXNEWS,...the partial pressure of solvent in the spray drying apparatus well below the vapor pressure of the solvent at the temperatures of the drying droplets.
Colo. adjusts ozone defense - Jul 19, 2008
Denver Post,Gasoline volatility is measured in pounds per square inch by a technique called "Reid Vapor Pressure," or rvp. In January, gasoline in Denver under state
Drop in Oil Prices Could Reach Pump Soon - Jul 17, 2008
RedOrbit,Supplies of gas used in the Kansas City area, which has a slightly different vapor pressure than fuel used in most of the country, have been tight this
Alberta company moving on CCS pipeline - Jul 18, 2008
Petroleum NewsFrom there, the gas would be shipped south along a high vapor pressure pipeline to conventional oil and gas fields around the city of Clive.
《醫藥��》高溫�動當心體能衰弱 - Aug 3, 2008
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Totech Super Dry launches brand new website - Jul 14, 2008
EMSNow (press release),..."For instance, new reflow profiles can drive up the saturated vapor pressure to double or even triple that present in tin lead reflow processes.
State seeks input on ethanol fuel standards - Nov 25, 2007
Macon Telegraph,Georgia and other Southeastern states have strict rules regarding vapor pressure. Too much vapor - a bigger problem during the summer in hot climates like
Drive it forever - Nov 18, 2007
Boston Globe,Gasoline has a higher vapor pressure than it used to. These days they are milking the last of that barrel of oil, and some of the hydrocarbons are simply
Vaccum Evaporator Purchased in 1957 Still Going Strong - Nov 26, 2007
Newswise (press release)...evaporator that fires a high-energy beam from an electron gun to boil a small spot of material, allowing lower vapor pressure materials to be deposited.
More DNA Mashups: Butanol Producing E. Coli - Nov 13, 2007
Wired NewsThey argue that biobutanol is the best alternative available because it has "a low vapor pressure, high energy density, and a gasoline-like octane rating.
Full Text - Nov 29, 2007
Science Magazine (subscription)Low–vapor pressure alloys containing elements such as In and Sn, or the recently studied Au-Ge alloys (27, 28), can also be observed in high vacuum.
An Alcohol Oxidase Dipstick Rapidly Detects Methanol in the Serum ... - Nov 28, 2007
AEM (subscription)...the laboratory method used for determination of osmolality (eg, freeze point depression, vapor pressure elevation), the wide range of "normal" osmolar
The Advantages of Sealless Magnetic Drive Pumps - Nov 5, 2007
Biodiesel Magazine,For example, volatile fluids have vapor pressure characteristics that result in a change from a liquid to vapor state at atmospheric pressure.
European Orbiter Examines Odd Martian Terrain - Nov 8, 2007
FOX NewsThe water vapor pressure on Mars is so low that any ice near the surface would quickly evaporate, leaving the mystery of the Medusae Fossae Formation for
RENEWED ENERGY: Florida Market Gears Up To Boost Ethanol Use - Nov 19, 2007
CattleNetwork.com,Because the addition of ethanol increases gasoline's Reid Vapor Pressure - a measure of its volatility - by one pound per square inch beyond current
Fueling an inefficient system - Nov 12, 2007
Press & Sun-Bulletin,Mirabito: We can't use ethanol in this state a few months a year because it raises the RVP (Reid Vapor Pressure) too high. So how are we going to convert
Mars Express Probes Red Planet's Unusual Deposits - Nov 5, 2007
Media Newswire (press release),This is because the water vapor pressure on Mars is so low that any ice near the surface would quickly evaporate. So, the mystery of Mars's Medusae Fossae
Indian Pump Industry: Surging Ahead - Aug 22, 2007
Commodity Online,...of cavitation activity at high temperatures at the same NPSH (Net Positive Suction Head) (Liquid pressure head in excess of vapor pressure head).
On the Level: Bulking up insulation is money well spent - Aug 25, 2007
Annapolis Capital,Moisture migrating via vapor pressure from the warm house during cold weather is a powerful force and if you block it you're asking for grief.
One burned in explosion - Aug 16, 2007
Paradise Post,..."There was some kind of combustible liquid in the barrel, not much, but it had high vapor pressure. The vapor got heated and there was a vapor explosion.
UK firm: Don't burn bodies, boil them - Aug 5, 2007
Science Daily (press release)...which typically occurs when a liquid is heated to a temperature such that its vapor pressure is above that of the surroundings, such as air pressure.
Venable: Blowing off lots of steam - Aug 22, 2007
Knoxville News Sentinel,Suffice to say they include vapor pressure, dimensions of a human, effective radiation area of skin, clothing cover, core temperature, activity, wind speed,
From the August 14, 1937, issue - Aug 17, 2007
Science News..."The average partial vapor pressure of this carbon dioxide," says Dr. Wilson, "is probably largely what determines the average carbon dioxide content of the
Feature: What is cloud seeding? - Aug 1, 2007
Philippine Information Agency,In mid-latitude clouds, the usual seeding strategy has been predicated upon the fact that the equilibrium vapor pressure is lower over water than over ice.
UI Libraries Freezer Helps Restore Books - Aug 16, 2007
PressZoom (press release),It's actually an exciting science demonstration of the changing vapor pressure of ice at different temperatures." "Sublime" refers to a process by which ice
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