Ví dụ về việc sử dụng Alkali metals trong Tiếng anh và bản dịch của chúng sang Tiếng việt
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However, it reacts explosively with alkali metals.
Traces of rare earth and alkali metals are beneficial to the process.
(6)Acid and alkali resistance(except molten alkali metals).
Superoxides form salts with alkali metals and alkaline earth metals. .
In addition,niobium almost does not react with molten alkali metals.
Usually these bases are created by adding pure alkali metals such as sodium into the conjugate acid.
Cesium is the least abundant of the five non-radioactive alkali metals.
Other alkali metals can be used in place of sodium, and most alcohols can be used in place of methanol.
It should be kept separately from oxidants, acids, alkali metals and so on.
High speed camera imaging of alkali metals exploding in water has suggested the explosion is a coulomb explosion.[3][4].
For instance, the radii generally decrease along each period of the table, from the alkali metals to the noble gases;
Alkali metals: The alkali metals make up Group 1 of the table, and comprise lithium(Li) through francium(Fr).
In special cases of extremely reactive materials(e.g. rare-earths, alkali metals), isopropyl alcohol is not recommended.
Hence they are not appropriate for storing chemicals which react quickly orviolently with atmospheric moisture such as the alkali metals.
Resistant to all media in the 0-14 pH range, except molten alkali metals and elemental fluorine, particularly at elevated temperatures and pressures.
The alkali metals exhibit many of the physical properties common to metals, although their densities are lower than those of other metals. .
Resistant to all media in the range of pH 0- 14,except for molten or dissolved alkali metals and elemental fluorine at high temperatures and pressures.
The alkali metals exhibit most of the physical properties typical to metals, even though their densities are less than those of other metals. .
IC also covers the determination of carbohydrates, organic acids,chloride and sulfate, alkali metals and alkaline earth metals as well as antioxidants.
Liquid ammonia will dissolve the alkali metals and other electropositive metals such as magnesium, calcium, strontium, barium, europium andytterbium.
Stability Incompatible with a wide variety of materials, including oxidizing agents, heavy metal oxides,dehydrating agents, alkali metals, rust, silver salts. Combustible.
Its most conspicuous property is its ability to dissolve alkali metals to form highly coloured, electrically conductive solutions containing solvated electrons.
Expanded PTFE joint tape is manufactured from 100% PTFE, it is an inert material which can be used in many applications against corrosive environments,except molten alkali metals and elemental fluorine.
Chemical resistance: Resistant to all media in the 0-14 pH range,except molten alkali metals and elemental fluorine, particularly at elevated temperatures and pressures.
Its steeply sloped red optical spectrum also lacks the FeH and CrH bands that characterize L dwarfs andinstead is influenced by exceptionally broad absorption features from the alkali metals Na and K.
It tarnishes slightly when exposed to air, although unlike the alkali metals, storage in an oxygen-free environment is unnecessary because magnesium is protected by a thin layer of oxide which is fairly impermeable and hard to remove.
When participating in reactions, hydrogen can have a partial positive charge when reacting with more electronegative elements such as the halogens or oxygen, but it can have a partial negative chargewhen reacting with more electropositive elements such as the alkali metals.
There were available powders designed for fires in flammable metals and three main types in use were,Sodium Chloride for fires involving alkali metals such as sodium and potassium, also zirconium, uranium and powdered aluminium which extinguished metal fire by fusing to form a crust.
Magnesium sulfate pharmaceutically incompatible(as a precipitate) from arsenic acid salts, strontium and barium carbonates, clindamycin phosphate, hydrocortisone sodium succinate,bicarbonates and phosphates of alkali metals, procaine hydrochloride, polymyxin B sulfate, tartrates, salicylates, ethanol(in high concentrations) and preparations of Ca 2+.