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Beryllium fluoride has distinctive optical properties. In the form of fluoroberyllate glass, it has the lowest refractive index for a solid at room temperature of 1.275. Its dispersive power is the lowest for a solid at 0.0093, and the nonlinear coefficient is also the lowest at 2 × 10 −14.
This list is sorted by boiling point of gases in ascending order, but can be sorted on different values. "sub" and "triple" refer to the sublimation point and the triple point, which are given in the case of a substance that sublimes at 1 atm; "dec" refers to decomposition. "~" means approximately. Blue type items have an article available by ...
Because of the facility of this exchange process, the mixed halides cannot be obtained in pure form. Boron trifluoride is a versatile Lewis acid that forms adducts with such Lewis bases as fluoride and ethers: CsF + BF 3 → Cs[BF 4] O(CH 2 CH 3) 2 + BF 3 → BF 3 ·O(CH 2 CH 3) 2. Tetrafluoroborate salts are commonly employed as non ...
When cooled the α′ form changes to β form at 110 °C and this can be cooled to 70 °C before changing back to the γ form. [32] It can be formed by melting sodium fluoride and beryllium fluoride. [32] The gas above molten sodium tetrafluoroberyllate contains BeF 2 and NaF gas. [11]
Carbon dioxide is the lasing medium in a carbon-dioxide laser, which is one of the earliest type of lasers. Carbon dioxide can be used as a means of controlling the pH of swimming pools, [139] by continuously adding gas to the water, thus keeping the pH from rising. Among the advantages of this is the avoidance of handling (more hazardous) acids.
It is the disproportionation of carbon monoxide into carbon dioxide and graphite or its reverse: [1] 2CO ⇌ CO 2 + C Boudouard-Equilibrium at 1 bar calculated with 2 different methods Standard enthalpy of the Boudouard reaction at various temperatures. The Boudouard reaction to form carbon dioxide and carbon is exothermic at all
It is absorbed in the form of carbon dioxide by autotrophs and converted into organic compounds. Carbon is also released from the biosphere into the atmosphere in the course of biological processes. Aerobic respiration converts organic carbon into carbon dioxide and a particular type of anaerobic respiration converts it into methane. After ...
The data only consider carbon dioxide emissions from the burning of fossil fuels and cement manufacture, but not emissions from land use, land-use change and forestry. [ n 2 ] Over the last 150 years, estimated cumulative emissions from land use and land-use change represent approximately one-third of total cumulative anthropogenic CO 2 ...