These methods describe both the quantization of vibrational modes as well as tunneling and are applied to the ⋅H + H2and ⋅H + CH4reactions. The absolute rate constants computed with the semiclassical instanton method both using on-the-fly electronic structure calculations and fi...
Describe how enzymes catalyze chemical reactions without being used up. Explain how enzymes help to control metabolism in living organisms. Be sure to discuss what enzymes are composed of and how their structure affects their function. How do enzymes affect reaction...
Researchers have revealed that the Maillard reaction, a chemical process commonly used in cooking, may also be occurring on the ocean floor. The process converts small organic carbon molecules into larger molecules, leading to the “preservation of organic carbon” in the sediment. This pr...
Many of these theories sought to describe light as a ray -- a straight line moving from one point to another. Pythagoras, best known for the theorem of the right-angled triangle, proposed that vision resulted from light rays emerging from a person's eye and striking an object. Epicurus ...
Is this a physical or chemical change? Explain. Describe chemical reactions and how they relate to chemical quantities. A student has two bowls of water, one of which has 2tsp of salt in it. They then placed an ice cube in both bowls, but the one without salt melted faster. ...
Whereas the extent of these conformational changes has been correlated to the level of TCR–pMHC catch bonds4,6,22, the two have not been integrated into a mathematical model to explore their potential connection. Here we develop two such models, one for each MHC class, to describe both α...
After all, many of us humans like to have one right answer. But Einstein paved the way in 1905 by embracing wave-particle duality. We've already discussed the photoelectric effect, which led Einstein to describe light as a photon. Later that year, however, he added a twist to the story...
2.Can you describe your journey to becoming a plant manager? I started my career as a chemical engineer – graduating from Texas A&M University in the 1980s. I began working with a catalyst manufacturing company, performing research and...
electrochemical reaction as a function of the electrochemical potential at the surface site. Using Faraday’s law, this gives the current density, since electrons are involved (Ref. 1). The Butler–Volmer equation may describe, for example, the hydrogen evolution reaction that occurs on the ...
Range is the term to describe the number of miles an electric car can drive on a single charge when the battery is full. You’ll typically see this number on the dashboard in the car. Calculating range can be done by multiplying the car’s battery capacity by the kilometers per kWh ...