The absorption spectrum of the chromophore may overlap the excitation and/or emission spectrum of the fluorophore, thereby allowing the change in fluorescence to be related to the intensity of color in the reaction and thus related to the quantity of the substance of interest.Morris...
A. color B. size C. shape D. weight 相关知识点: 试题来源: 解析 A。解析:化学反应经常会有颜色变化。选项 B 尺寸变化一般不是化学反应的主要特征;选项 C 形状变化也不是化学反应常见的特征;选项 D 重量变化不一定在化学反应中普遍发生。反馈 收藏 ...
Parting the clouds: A supramolecular recognition reaction of cyclodexdrins with polymers—adamantyl derivative N-isopropylacrylamide copolymers—with inver... H Ritter,O Sadowski,E Tepper - 《Angewandte Chemie International Edition》 被引量: 232发表: 2003年 Determination of the enantiomeric composition ...
百度试题 结果1 题目In reaction with lime, the color of the juice does not change.A.对B.错 相关知识点: 试题来源: 解析 B In the reaction to the lime, the juice color changes from brown to yellow.反馈 收藏
LONG-TERM TREND IN THE MATURATION REACTION NORM OF TWO COD STOCKS Average age and size at maturation have decreased in many commercially exploited fish stocks during the last decades. This phenomenon could be either a dir... S Barot,M Heino,L O'Brien,... - 《Ecological Applications》 被引...
aUsually, completion of the reaction is indicated by a sudden, visible change in the reaction system that coincides with the stoichimetric relationship between moles or equivalents of the regent solution and the reactant in the test solution. 通常,反应的完成由在与摄政的解答和反应剂痣或等值的之间...
The classic 'blue bottle' color change reaction uses methylene blue in a reaction that changes color from clear to blue and back to blue. Other indicators work, too, so you can change colors from red to clear to red (resazurin) or from green to red/yellow to green (indigo carmine). ...
The color change from colorless to pink in a chemical reaction may indicate the presence of _. A. acid B. base C. salt D. water 相关知识点: 试题来源: 解析 B。化学反应中从无色变为粉红色可能表明有碱的存在。A 选项酸一般不会有这种颜色变化;C 选项盐通常也不会有这样的变化;D 选项水是...
The quality improvement may be attributed partly ot the elimination of the continuous water film covering the surface in the constant rate drying period, which may serve as a medium for the reaction and transport of the chemical species. 展开 ...
1. the metabolic process in which energy is liberated for use in work.2. destructive metabolism. catalysis the process of an agent that affects a chemical or other reaction without being itself changed or affected. See also decaying. — catalyst, n. ...