molecular formula

Five Calculating Methods for the Molecular Formula of Compounds

计算化合物分子式的五种方法

The molecular formula shows nothing but the total member of carbon and hydrogen atoms .

分子式只不过表示碳和氢原子各自的总和。

Retrieval Method of Functional Material by Means of Molecular Formula

用分子式对功能材料进行检索的方法

Care the Use of Molecular Formula Index in Searching Chinese Literature of Chemistry and Chemical Engineering

中文化学化工文献检索应注意分子式检索的使用

General Molecular Formula for Organic Compounds

有机化合物的分子式经验判别规则研究

An expanded molecular formula showing the arrangement of atoms within the molecule .

空间排阻色谱（法）表示分子中原子排列的扩展分子式。

Before we can assign a structural formula to a compound , we must first know its molecular formula .

在确定一个化合物的结构式之前，首先应知道它的分子式。

A Basic program Used for Calculating Molecular Formula and Double Bond Equivalents by Molecular Compostions

用BASIC程序从分子组成计算分子式与不饱和度

The result shows that the measurement results agree well with standard values by choosing simulative molecular formula on balance .

结果表明，采用模拟的平均分子式作为平衡项处理，测定结果与给出的参考值较吻合。

The system can search the information in the database by name , molecular formula , structure or chemical shifts , respectively .

系统具有名称、结构、化学位移和分子式等多种检索功能。

Research the thermal degradation of pharmaceuticals which has methoxy in the molecular formula using different headspace condition .

在不同的顶空条件下测定头孢西丁钠等药品中的甲醇残留量，考察分子结构中有甲氧基的药品在顶空条件下的热稳定性。

Based on the valence bond theory , a general molecular formula for organic com - pounds is derived .

本文根据价键理论导出了一个有机化合物的分子总通式。

VBA programs for subscript of chemical molecular formula

化学分子式下标的VBA程序

About the Molecular Formula of Sodium Diacetate

关于双乙酸钠的分子式

Exhaustive Generation of the Structures of Organic Compounds ⅰ . Generation of the Exhaustive Segments Sets From Molecular Formula

有机化合物结构异构体的穷举生成&Ⅰ.从分子式穷举生成结构片断集

The calculation of molecular formula of compounds by ~ ( 13 ) c NMR ( com , dept ) data

用~（13）cNMR（COM，DEPT）数据计算化合物的分子式

It is calculated in practice by summing the atomic weights of the atoms making up the substance 's molecular formula .

实际计算中是把组成该物质分子式的各原子的原子量求和而得。

On the basis of production practice , the reaction mechanism of highly efficient aliphatic water reducer was analyzed in-depth , its molecular formula was put forward .

在生产实践的基础上对脂肪族高效减水剂的合成反应机理进行了深入的分析，提出了脂肪族减水剂的分子示意式。

From the molecular formula alone , we can deduce the " degrees of unsaturation " in the molecule .

仅从分子式，我们就能推断分子中的不饱和度。

With high technology content is made from the root of herbaceous peony extract technology products , extracted C23H28O11 , molecular formula : 480.45 .

芍药苷是用高新技术精制提取技术从白芍中提取出来的产品，分子式：C23H28O11、分子量480.45。

Their general molecular formula were characterized with elemental analysis , IR , UV , XRD , TEM , TG-DTA and TPR techniques .

通过元素分析、IR、UV、XRD、TEM、TGDTA、TPR等测试手段对其组成、结构、颗粒大小、热稳定性以及表面性能进行了表征。

Advances in food science are even more striking . A Brazilian scientist using micro-molecular chemistry determined the molecular formula of chlorophyll and enzymes .

食物科学更是石破天惊，巴西一位科学家，利用微分化学，找出了叶绿素、酵素的分子式。

A topological method is outlined for deducing the possible structures from the given molecular formula of Mo ( W ) Cu ( Ag ) S clusters .

本文给出了一种由Mo（W）－Cu（Ag）－S簇合物分子式导出可能结构的拓扑方法。

According to the principle of isomeric chemistry , when organic substances have the same molecular formula and the same functional groups , their chemical and physical properties are very similar .

根据同分异构的化学原理，有机物有相同的分子式和相同的官能团时，它们的化学性质和物理性质很相似。

Molecular formula of PESA is a non-nitrogen non-phosphate chelating structure , and breakthrough progress is made in performance of inhibiting scale and biodegradability .

PESA分子式是一种无磷、非氮的螯合结构，在阻垢性能和生物降解性方面都取得了突破进展。

In the paper . Sidgwick 's EAN rule is introduced and made use of to calculate the molecular formula , structure and space structure model of coordination compound , especially carbonyl .

介绍了Sidgwick的EAN规则，并利用EAN规则对配合物&特别是羰基化合物的分子式、结构和空间构型进行了预测；

The molecular formula of the two based on Schiff base cation are SB ( CH3COO ) 2 and SB ( CF3COO ) 2 ;

两个Schiff碱型离子液体是一个碱分子与两个乙酸或三氟乙酸成盐，其分子式分别为：SB（CH3COO）2和SB（CF3COO）2；

Molecular formula : H3PO3 Appearance : white crystalline Use : It is the raw material manufacture sub-phosphate , is also manufacturing plastic stabilizer and organic phosphorus pesticide raw materials .

分子式：H3PO3外观：白色结晶用途：是制造亚磷酸盐的原料，也是制造塑料稳定剂和有机磷农药的原料。

Wedge perspective formula is one of the methods to express the stereoscopic construction of organic molecular formula . The way the formula states in the book of Organic Chemistry is unclear to certain extent .

楔形透视式是有机分子立体结构表示方法之一，有机化学教科书中乙硼烷楔形透视式的书写方式不够清楚。

The molecular formula of schisantherin A is found to be C_ ( 30 ) H_ ( 32 ) O_9 by mass spectroscopic and elementary analyses .

五味子酯甲经质谱及元素分析确证其分子式为C（30）H（32）O9。