CO是一氧化碳的分子式。
二氧化碳的分子式是co2。
老师：水的分子式是什么？
水的分子式老师：水的分子式是什么？
The formula for water Teacher: What the chemical formula for water is the?
测得的准确分子量与具体的分子式完全吻合。
The precise molecular weight that is measured can be uniquely associated with a specific moleculer formular.
这是氯哒嗪的分子式。
在反应式的左侧我们写上全部反应物的分子式。
On the left of the equation we write the molecular formulas of all the ingredients or reactants.
在这一组的分子式中，每一个字母都代表一个不同的基因。
在确定一个化合物的结构式之前，首先应知道它的分子式。
Before we can assign a structural formula to a compound, we must first know its molecular formula.
氢气的分子式为H2，它是一种无色、无溴和无味的气体。
Hydrogen is referred to as H2. It is a colourless, odourless and tasteless gas.
化合物的分子式提供了组成该化合物分子种原子的种类及其数量的信息。
The formula of a compound gives information about the kinds and numbers of atoms that make up each molecule of that compound.
所以，上面所展示的一个组别的分子式不过就是全部的DNA分子的一小部分。
The unit shown above, therefore, is no more than a small portion of the whole DNA molecule.
异丁基铵黑药和正丁基铵黑药是同分异构体，它们有相同的分子式，只烷基异构。
Ammonium di-iso-butyl dithiophosphate and ammonium din-butyl dithiophosphate is isobutyl isomers, they have the same molecular formula, only alkyl isomers.
本发明提供了一种全氟离子交换树脂，该全氟离子交换树脂的分子式如式m所示。
The invention provides a perfluorinated ion exchange resin and a preparation method and application thereof. The molecular formula of the perfluorinated ion exchange resin is shown as the formula m.
面对着这些纷繁的分子式，他不知如何是好，因为他对它们一窍不通，他是学艺术的。
Facing thees numerous and complicated molecular formula, he doesn't know what to do, because he is a layman to them. His major is art.
我们知道，一个水分子是由两个氢原子和一个氧原子组成的，它的分子式表示为h2o。
We have learned that water is made up of two atoms of hydrogen and one atom of oxygen, which we describe by the formula H2O.
根据申报表项填写情况，申报物质有唯一确定的分子结构，所以应准确填写申报物质的分子式和分子量。
To provide the molecular formula and molecular weight, as the substance has a unique and defined molecular structure according to item III of your notification form.
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。
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.
本文运用IR、NMR、MS等分析测试手段，研究了2-甲基咪唑和水杨酸与锌的络合物的分子式和结构式。
The formula and structural formula as to complex compound which was formed by reaction of 2-methylimidazole, O-hydroxybenzoic acid and zinc have been stud. ed by using IR, NMR, and MS.
介绍了用13cNMR (COM,DEPT)数据计算化合物的分子式，该方法有利于未知化合物的分子式计算。
The calculation of molecular formula of compounds was described by13C NMR (com, DEPT) data in this paper. It is a useful method for unknown compounds.
葡萄糖和果糖具有相同的化学分子式但有很不同的特性。
Glucose and fructose have the same chemical formula but have very different properties.
老师：唐纳德，水的化学分子式是什么？
羟基是分子式是HO，水分子式是H 2 O，羟基通常是水分子分解后的产物。
Hydroxyl is HO, as opposed to water's H2O, and it is usually the result of water molecules decomposing.
根据Dantus的说法，这项技术甚至能区别出两个化学同分异构体—有同样的化学分子式但不一样的原子排列—之间的不同。
According to Dantus, the technique can even tell the difference between chemical isomers - chemicals with the same chemical formula but a different arrangement of atoms.
然而由活的有机体产生的绝大多数天然碳水化合物的组成不遵守这个简单的经验分子式。
However the great majority of natural carbohydrate compounds produced by living organisms do not have this simple empirical formula.
同分异构体：亦称异构体。分子式相同但构型不同的两种或两种以上的物质，其差别只在于组成原子的排列不同。
Isomer: one of two or more substances with identical molecular formulas but different configurations, differing only in the arrangement of their component atoms.
前一个分子式的形式得到正式表述。
类似的，分子式中的下标是在元素符号后边的，而不是前边。
Similarly, molecular formulas have to have subscripts after the element name, not before.
重要的是记住分子式是代表中性化合物，正负电荷加和为零。
What is important to remember is that the formulas represent neutral compounds where the positive and negative charges add to zero.
重要的是记住分子式是代表中性化合物，正负电荷加和为零。
What is important to remember is that the formulas represent neutral compounds where the positive and negative charges add to zero.
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