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Since gas molecules can move freely within a container, their mass is normally characterized by density. Density is the amount of mass per unit volume of a substance, or the inverse of specific volume. For gases, the density can vary over a wide range because the particles are free to move closer together when constrained by pressure or volume.
A common ethanol-gasoline mix of 10 % ethanol mixed with gasoline is called gasohol or E10, ... Natural-gas condensate#Drip gas – Low-density mixture of hydrocarbon ...
The density of air or atmospheric density, denoted ... Air is a mixture of gases and the calculations always simplify, to a greater or lesser extent, the properties ...
The ideal gas law, ... where p is the absolute pressure of the gas, n is the number density of the molecules (given by the ratio n = N/V, ...
Syngas produced by coal gasification generally is a mixture of 30 to 60% carbon monoxide, 25 to 30% hydrogen, 5 to 15% carbon dioxide, and 0 to 5% methane. It also contains lesser amount of other gases. [10] Syngas has less than half the energy density of natural gas. [11]
For a mixture (j=1,2,...) of ideal gases, each at partial pressure P j, ... ρ is the mass density of the gas. P is the pressure of the gas. R is the universal gas ...
Liquefied petroleum gas, also referred to as liquid petroleum gas (LPG or LP gas), is a fuel gas which contains a flammable mixture of hydrocarbon gases, specifically propane, n-butane and isobutane. It can sometimes contain some propylene , butylene , and isobutylene / isobutene .
A breathing gas is a mixture of gaseous chemical elements and compounds used for respiration. The essential component for any breathing gas is a partial pressure of oxygen of between roughly 0.16 and 1.60 bar at the ambient pressure. The oxygen is usually the only metabolically active component unless the gas is an anaesthetic mixture.