In Minnesota, standards call for a maximum Reid vapor pressure (RVP) of 9.0 in winter to aid cold starts, and a maximum RVP of 7.8 in summer to minimize potential vapor lock.

Each atmospheric gas has its own vapor pressure, a measure of the number of molecules present at a given temperature. The vapor pressure of water thus measures the amount of water vapor in the air.

THC molecules on the other hand are larger and more complex with a low vapor pressure. This makes developing a measurement device that can identify THC in a person's breath incredibly difficult.

All the latest science news on vapor pressure from Phys.org. Find the latest news, advancements, and breakthroughs.

Vapor Pressure (mm/Hg) Benzene 75 Chlorine 4788 or 6.3 atm Ethylene Oxide 1064 or 1.4 atm Fuel Oil #4 2 Methylene Chloride 350 Water 25. Calculating Vapor Concentration.

In Denver, the atmospheric pressure is only about 12 pounds per square inch, compared with 14.7 pounds per square inch in Los Angeles. With that much less pressure, you don’t need to apply as much ...

The hot, humid exhaust from jet engines mixes with the atmosphere, which at high altitude is of much lower vapor pressure and temperature than the exhaust gas.