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Both men lowered the temperature of air until it liquefied and then distilled the component gases by boiling them off one at a time and capturing them separately. [29] Later, in 1901, oxyacetylene welding was demonstrated for the first time by burning a mixture of acetylene and compressed O 2. This method of welding and cutting metal later ...
Liquid oxygen has a clear cyan color and is strongly paramagnetic: it can be suspended between the poles of a powerful horseshoe magnet. [2] Liquid oxygen has a density of 1.141 kg/L (1.141 g/ml), slightly denser than liquid water, and is cryogenic with a freezing point of 54.36 K (−218.79 °C; −361.82 °F) and a boiling point of 90.19 K (−182.96 °C; −297.33 °F) at 1 bar (15 psi).
It was named "ozon" in 1840 by Christian Friedrich Schönbein, [8] from ancient Greek ὄζειν (ozein: "to smell") plus the suffix -on, commonly used at the time to designate a derived compound and anglicized as -one. [9] Ozone is thermodynamically unstable and tends to react toward the more
In the mean time, the porous structure or the defect will also be beneficial to the oxygen absorption process. [ 7 ] Besides active site density, the electron configuration of M center in M-N 4 active site also plays an important role in the activity and stability of an oxygen reduction reaction catalyst.
where the rate is the change in the molar concentration in one second in the rate-determining step of the reaction (the slowest step), [A] is the product of the molar concentration of all the reactants raised to the correct order (known as the reaction order), and k is the reaction constant, which is constant for one given set of circumstances ...
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In today's puzzle, there are eight theme words to find (including the spangram). Hint: The first one can be found in the top-half of the board. Here are the first two letters for each word: SA. PL ...
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