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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.
ISO 13293 provides minimum training standards for gas blenders for recreational diving services at two levels. Level 1 gas blender is competent to blend nitrox and handle oxygen, air and nitrox, i.e. nitrox gas blender, and a level 2 gas blender is also competent to mix gases containing helium and argon, i.e, a trimix gas blender. [14]
Mixing is performed to allow heat and/or mass transfer to occur between one or more streams, components or phases. Modern industrial processing almost always involves some form of mixing. [1] Some classes of chemical reactors are also mixers. With the right equipment, it is possible to mix a solid, liquid or gas into another solid, liquid or gas.
A typical mixture is 3 parts of concentrated sulfuric acid and 1 part of 30 wt. % hydrogen peroxide solution; [1] other protocols may use a 4:1 or even 7:1 mixture. A closely related mixture, sometimes called "base piranha", is a 5:1:1 mixture of water, ammonia solution ( NH 4 OH , or NH 3 (aq) ), and 30% hydrogen peroxide.
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
The stator creates a close-clearance gap between the rotor and itself and forms an extremely high-shear zone for the material as it exits the rotor. The rotor and stator combined are often referred to as the mixing head, or generator. A large high-shear rotor–stator mixer may contain a number of generators. [1] [2]
The lowest value is when the mole fraction is 0.5 for a mixture of two components, or 1/n for a mixture of n components. The entropy of mixing for an ideal solution of two species is maximized when the mole fraction of each species is 0.5.
ACE mixture is an historical anaesthetic agent for general anaesthesia. It was first suggested by George Harley [1] and first used in England around 1860. In 1864 it was recommended for use by the Royal Medical and Surgical Society's Chloroform Committee. It was rarely used after the 19th century, except in Germany, where it was used for ...
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