Si has a larger atomic radius than carbon. This means that the distance between the Si atoms is greater than the distance between the carbon atoms. The greater the distance between the atoms, the less overlap there is between the electron clouds and the weaker the bond. 硅原子半径大于碳原子...
A consultation on the proposals is being launched today, with the government saying it hopes to give households that want to shift to low-carbon heating the opportunity to choose what works best for them. Heat pumps, which use electricity to draw heat from the air or ground to warm homes a...
"Coalition-building may imply compromises to be struck in potentially contentious policy areas, including housing," UBS analysts wrote, though they see a carbon tax as manageable for property firms such as Vonovia and Deutsche Wohnen. (Graphic: DAX and the euro, https://fingfx.thomsonreuters.com...
Due to electron-donating resonance effect (+R-effect) of the NH(2) group, the carbon-nitrogen bond in aromatic amines has some double bond character. In contrast, in aliphatic amines, the carbon-nitrogen bond has only single bond character. Therefore, ca
"There's a reason why Germany sells us eight times more cars than we sell them, and it's certainly not American craftsmanship or quality or anything else," the official continued. While that portrayal of VAT - which has been a target of many U.S. administrations - is contest...
Discuss why supercritical carbon dioxide is a nearly ideal solvent. Why would mixed solvents be used for recrystallization? Why do elements form compounds? Why would a heat treated enzyme behave differently than a non-heated enzyme? Why does diamond have a lower entropy than graphite? Why don't...
Why does yeast go through fermentation? How is starch broken down when it is used as a sole carbon source by microorganisms? Explain how conventional drying and freeze-drying preserve foods. Explain why it is undesirable for ensiling material to get too hot during the fermentation proce...
Among policy measures to grow the green bond market, preferential capital treatment for low-carbon assets and minimum standards for green definitions receive the highest investor support, but respondents are divided whether a strict definition of ‘green’ or a less strict definition would be more ...
Notably, notoginseng does not contain tryptophan, while ginseng does [24]. Compared to that in notoginseng, the total content of amino acid in ginseng is higher. The difference in the contents of the various amino acids may be related to the different regions, harvest times, and different ...
With Global-Warming, the Intertropical-Convergence-Zone (that messy zone in the south in the loop) has expanded, although it does return to normal at times. This shifts northwards the Ferrel & Hadley cells! Spring starts earlier, warm-moist and hot-dry air-masses show themselves earlier. Mons...