Bond enthalpyis the energy required to form or break a given bond. Its value can change between molecules, even for the same type of bond. For example, the bond energy of H2O's two O−H bonds is 464 kilojoules per mole (kJ/mol), but in methanol (CH3OH) the one O−H bond has...
Looking for chemistry research topics? Check out our list of 200+ topic ideas divided into categories and learn how to choose the best one for your research paper.
“Hi Anthony. I want to memorize some physics, chemistry, and math formulas, and also some texts that I have to memorize verbatim, but it needs a lot of Memory Palaces and too much time. Plus, I don’t know how to memorize formulas. ...
We find that tyrosine is a stronger sticker than phenylalanine, whereas arginine is a context-dependent auxiliary sticker. In contrast, lysine weakens sticker–sticker interactions. Increasing the net charge per residue destabilizes phase separation while also weakening the strong coupling between single-...
periodic table, according to the International Union of Pure and Applied Chemistry (IUPAC). These atomic weights should be considered provisional, since a new isotope with a longer half-life (how long it takes 50% of that element to decompose) could be produced in the future, according to ...
The Chemistry of Alcohol The alcohol found in alcoholic beverages is ethyl alcohol (ethanol). The molecular structure of ethanol looks like this: where C is carbon, H is hydrogen, O is oxygen and each hyphen is a chemical bond between the atoms. For clarity, the bonds of the three hydroge...
In chemistry, a compound's valence number is the number of bonds formed by the electrons in the last (outer) shell (called valence electrons) of atoms to other atoms' valence electrons. The octet rule (the tendency of an atom to seek stability by filling its outer shell with eight electro...
Learn about how to find the density of an object. Discover how to use the density formula, perform unit conversions, and practice with examples and...
Association free energies #DELTA#G in water from NMR shift titrations with ten ion pairs from open-chain #alpha#, #omega#-dications and #alpha#, #omega#-dications show a dependence on ionic strength that can be fitted to the Debye-Huckel equation. In spite of the anisotropic nature ...
There are two parts to determining how much clouds weigh: cloud dimensions and water content. You can find the length, width, and height of a cloud based on its shadow on the ground, with a 1-kilometer shadow equaling 1,000 meters. The water content is harder to figure out because it...