Can hydrogen be a negative ion? H_2S and H_2O have similar structures and their central atoms belong to the same group. Yet H_2S is a gas at room temperature and H_2O is a liquid. Use bonding principles to explain why this
Why is that in FEA it is preferred to analyze thin structures using shell elements rather than the solid elements? Explain Tungsten Inert Gas(TIG) Welding? (a) Briefly explain why porosity decreases the thermal conductivity of cera...
Why is the shape of a molecule important? Why is water such a good solvent? Why is hydrogen important in our bodies? Why is water an excellent solvent? Why are water molecules attracted to each other? Why does water have a high specific heat? Why is it important that ice is less dense...
Ferrous chloride solution is a common chemical reagent widely used in chemical experiments and industrial production. During the use of ferrous chloride solution, we often observe changes in its color, sometimes appearing pale yellow, sometimes dark green or even black. This color change is not only...
Why is hydrogen chloride acidic in water? Why does sodium bicarbonate fizz? Why do bases make good household cleaners? Why doesn't nitrogen support burning? Why is there no N2 in your blood even though it is the dominant gas in the atmosphere? Why is nitrogen the main component of air?
a然后再告诉你。好吗 Then tells you again.Good [translate] a包装人员必须自检 The packing personnel must self-check [translate] a南阳市第三中学 正在翻译,请等待... [translate] a我去游泳而其他人则在踢球 正在翻译,请等待... [translate] aYield of hydrogen chloride during flaming conditions. 出...
We anchored a colourimetric probe, comprising a complex containing copper (Cu(II)) and a dye, to a polymer matrix obtaining film-shaped chemosensors with induced selectivity toward glycine. This sensory material is exploited in the selectivity detection of glycine in complex mixtures of amino acids...
The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air. However, much of the shorter wavelength light is absorbed by the gas mol...
Methane is also a greenhouse gas (GHG), so its presence in the atmosphere affects the earth's temperature and climate system. Methane is emitted from a variety of anthropogenic (human-influenced) and natural sources. ... Methane is more than 25 times as potent as carbon dioxide at trapping...
Chemicals of all the different elements belong to the category of wastes that are hazardous in nature. These wastes are so dangerous because they pollute the environment to a higher extent.Answer and Explanation: It is important to dispose of all the hazardous waste of metals...