In the language of chemistry, this term simply refers to a molecule that has repeating amide bonds. However, only chemists refer to silk and wool as polyamides, and the rest of the world considers this term to be synonymous with nylon. How Is Polyamide Fabric Made? While the methods ...
Enthalpy of atomization, ΔaH0, is the change in enthalpy when one mole of bonds is completely broken to obtain atoms in the gas phase. For example:atomization of methane molecule. For diatomic molecules, enthalpy of atomization is equal to the enthalpy of bond dissociation. What are three of...
Glass is sorta liquid, sorta solid, and fully weird. New science explains the long-standing (and very annoying) structural question.
Is NaCl considered a molecule? Explain. How does salt affect the boiling point of water? (in simple words) Describe in detail how you would make one molar solution of sodium chloride. What are three ways to increase the rate at which salt dissolves in water?
As a least-flexible reference molecule we select the fluorescent Phe-45-Trp variant of human ubiquitin, investigated extensively by Roder and coworkers (Laub et al., 1995). A structure of this variant, Ub*, with its single tryptophan residue is shown in Fig. 1. It is a mixed α/β ...
One can thus see how a substance (monomer) with as small a molecular weight as 54 grows to become a giant molecular (polymer) of (54 × 4000 ≈)200000 molecular weight. It is essentially the 'giantness' of the size of the polymer molecule that makes its behavior different from that of...
a time. Energy only exists as a static quantity when stored in some indirect primary form, in a battery, fuel tank, rubber band, hydroelectric dam, chemical molecule or nucleus, etc, and is only able to do work when released to create an energy flux thatmustdo work, which may be to ...
The heating up principle: when the vibration frequency of infrared wavelength is the same as the vibration frequency of the radiated object, the resonance will occur, and the intense vibration of the molecule means that the object is warming up, and the wavelength is 1~8um. The setting of ...
The crystalline structure of quartz comprises strong, covalent silicon-oxygen bonds; a single molecule forms a tetrahedral geometry. A network of SiO4 molecules forms a body-centered crystal in hexagonal prism form. When processed, the crystalline structure is converted to metastable, amorphous quartz...
an atom's nucleus from flying apart. The weak nuclear force causes radiation in some nuclei, and the electromagnetic force performs critical tasks such as holding a molecule's atoms together. Although the sun's gravity grips planets billions of miles away, gravity is the weakest fundamental ...