表示“例子、例证”:用于具体说明抽象概念或理论,如“This experiment is a classic example of chemical reactions.”(该实验是化学反应的经典例证。) 表示“榜样、楷模”:强调值得效仿的人或行为,如“Teachers should set a positive example for students.”(教师应为学生树立积极榜...
What is the EVPI formula? What are the three physical factors that affect reaction rates? What is the chemistry of iron? What is el quinceanero? How can one determine the rate determining step of a chemical equation, and how is it different from the rate law? Can heat be lost in a ...
The invention relates to the use of N-substituted indole-3-glyoxylamides of the general formula I as antitumor agents1and to a pharmaceutical composition having antitumor action, characterized in that it contains at least one of the compounds of the general formula 1, if appropriate also in ...
Learn all about enantiomeric excess. Understand how to calculate enantiomeric excess, learn the formula of enantiomeric excess, and see an example...
Even if the concentration and quantity of odour happened to be optimal, we had little control over the exact circumstances of the exposure. Each person produces an odour with a different chemical formula. Using two approaches to identification of a cyclic sub-sample, we searched for odour eff...
Some of the transitionmetal oxides are found in nature as non-stoichiometric compounds, with slightly less metal than the chemical formula would show. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a lustrous transitionmetal with a silver co...
Epimer in stereochemistry specifies one of a pair of stereoisomers. Enantiomers, Diastereomers- definition, and examples. Know more about the concept @ BYJU'S.
This is done by equating the coefficients of the reactants. The ratio setup hints to the reactant that will deplete first, making it the limiting reactant, and the other one is the one in excess. What is an excess and limiting reagent? In a chemical reaction, the chemical that is ...
The ion Cl- is an example of ___. A) an atom B) a cation C) an anion D) a molecule Ion: There are two types of charges present in our surroundings, these are negative and positive charges. If there is a deficiency of electron on an atom, then the...
The chemical name for aspirin is acetylsalicylic acid. Its chemical formula is C-9, H-8, O-4. Acetylsalicylic acid is an example of anorganic compound, which means it contains carbon. Is cooking oil organic or inorganic? Vegetable oil is anorganic compoundobtained from seeds or other plant ...