过去分词
发表于 2025-3-25 04:16:36
Volker Steinbach,Bernhard Cramer,Jürgen Vastersecame one of the most powerful tools of organic synthesis widely used in both academy and industry. The utilisation of readily approachably organic halides and pseudohalides allows straightforward selective and high-yielding synthesis of compounds not available formerly under mild and affordable con
immunity
发表于 2025-3-25 11:32:26
Dieter Lohmannof simple methods to substantially alter polymer characteristics by adding chlorine has resulted in increasing interest in obtaining and utilizing new chlorine-containing polymers. Chlorine processes are used on a large scale not only to produce chlorine-containing polymer compounds but also in the
FAWN
发表于 2025-3-25 15:03:58
Edda Schlager,Dieter Lohmannof simple methods to substantially alter polymer characteristics by adding chlorine has resulted in increasing interest in obtaining and utilizing new chlorine-containing polymers. Chlorine processes are used on a large scale not only to produce chlorine-containing polymer compounds but also in the
Ccu106
发表于 2025-3-25 18:45:05
Harald D. Gill,Dieter Lohmann for the scientists. When G.N. Lewis first introduced the idea of sharing electrons in 1916 based on his cubic atom, it was completely out of tune with established belief and was considered as bizarre and absurd. Pauli’s exclusion principle was the next step in understanding the covalent bond. Later
expound
发表于 2025-3-25 21:43:02
Dieter Lohmann the concept of mole, Avogadro’s number, conservation of matter, balancing chemical equations, and the laws of definite and multiple proportions. Furthermore, according to A. Rocke, from the historical perspective, laws of definite and multiple proportions are nothing more than special cases of the
NADIR
发表于 2025-3-26 00:59:18
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cajole
发表于 2025-3-26 07:16:10
Nadja Podbregarving. In this chapter, we propose a cyclic predict-observe-explain (POE) strategy for probing and fostering students’ reasoning abilities. In a cyclic POE process, three or more POE activities are performed, but in each cycle students encounter a different value or situation of the same variable. By
febrile
发表于 2025-3-26 09:04:51
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gregarious
发表于 2025-3-26 13:31:28
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Talkative
发表于 2025-3-26 19:20:02
Martin Krüger structure and processes of chemistry. However, teaching chemistry most effectively necessitates both content knowledge as well as pedagogical content knowledge. Regarding the content knowledge, it is suggested that in the teaching and learning of chemistry, students should be exposed to recent inve