百度试题 结果1 题目26 What is the minimum number of hydrogen bonds in a length of DN A containing 700 base pairs? C A 350 B 700 C 1400 D 2100 相关知识点: 试题来源: 解析 C 反馈 收藏
The introduction of fluorine atoms in the vicinity of functional groups is one of the ways this can be achieved. In this chapter, a number of hydrogen-bond acidity scales are reviewed, with a focus on the hydrogen-bond donating capacity of alcohols. An overview of experimental data showing ...
Average number of hydrogen bondsa (H-bonds) and charge pairsb formed by steroids with the surrounding lipids and water.Maarit, Neuvonen
The protein and MXene Ti3C2Tx were bonded by hydrogen bonds due to their abundant hydrogen bond donors and acceptors. The electrical characteristics of the composite biomaterial could be modified without changing the quantity of each component by varying the number of repeating amino acid sequence ...
Liquid water's high boiling point is due to the high number of hydrogen bonds each molecule can have relative to its low molecular mass. Water is unique because its oxygen atom has two lone pairs and two hydrogen atoms, meaning that the total number of bonds of a water molecule is four....
This is confirmed by correlations of the shared electron number with the NH stretch shift showing that this quantity can be taken as an indicator for individual hydrogen bond energies. Axle substitution influences the strengths of the individual hydrogen bonds which is again reflected in the NH ...
D Kajiya,K Nishikawa,Ken-ichi Saitow - 《Journal of Physical Chemistry A》 被引量: 34发表: 2005年 Fluctuation theory of hydrogen bonding in near-critical fluids Recent experiments indicate that the number of hydrogen bonds in solutions increases in the critical region of the solvent. This effect...
number of hydrogen bonds as a function of time. •-ac: average over all autocorrelations of the existence functions (either 0 or 1) of all hydrogen bonds. •-dist: distance distribution of all hydrogen bonds. •-ang: angle distribution of all hydrogen bonds. •-hx: the number of ...
Molecular structure determination of such stubborn target molecules has been realized by single-crystal X-ray diffraction following their adsorption into a limited number of metal organic frameworks11,12,13,14,15 and others (a.k.a. crystalline sponges)16,17. Co-crystallization explicitly for determin...
The number of electrons and their quantum mechanical status define the nature and number of bonds a chemical element can form. Isotopes of a given element contain the same number of protons (and electrons) and hence share the same chemical characteristics but they contain different numbers of ...