molecular formula

简明释义

分子式

英英释义

例句

1.Chemists often use the molecular formula 分子式 to identify compounds.

化学家常用molecular formula来识别化合物。

2.The molecular formula 分子式 of glucose is C6H12O6.

葡萄糖的molecular formula是C6H12O6。

3.The chemical compound water has the molecular formula 分子式 H2O.

化合物水的molecular formula是H2O。

4.The molecular formula 分子式 for sodium chloride is NaCl.

氯化钠的molecular formula是NaCl。

5.To determine the molecular formula 分子式 of a compound, you need its empirical formula and molar mass.

要确定一个化合物的molecular formula，你需要它的经验式和摩尔质量。

作文

In the study of chemistry, understanding the composition of substances is crucial for many applications, from pharmaceuticals to materials science. One of the fundamental concepts in this field is the molecular formula, which provides a way to represent the types and numbers of atoms in a molecule. A molecular formula is a concise way to convey information about a compound's chemical composition, showing not only the elements involved but also the exact number of each atom present. For example, the molecular formula for water is H₂O, indicating that each molecule consists of two hydrogen (H) atoms and one oxygen (O) atom.The significance of the molecular formula extends beyond mere representation; it serves as a foundation for understanding the properties and behaviors of substances. Different molecular formulas can lead to vastly different compounds with unique characteristics. Take glucose (C₆H₁₂O₆) and fructose (C₆H₁₂O₆) as an example; while they share the same molecular formula, their structural differences result in distinct tastes and functions in biological systems. This illustrates how even slight variations in atomic arrangement can have profound implications.Moreover, the molecular formula is essential in stoichiometry, the branch of chemistry that deals with the quantitative relationships between reactants and products in chemical reactions. By knowing the molecular formula of substances involved in a reaction, chemists can predict how much of each reactant is required and how much product will be formed. This is particularly important in industrial applications where efficiency and cost-effectiveness are paramount.Furthermore, the molecular formula also plays a key role in the development of new materials and drugs. In drug design, for instance, researchers often start with a specific molecular formula to create compounds that can interact with biological targets in desired ways. Understanding the molecular formula allows scientists to modify existing compounds or create new ones that may offer improved efficacy or reduced side effects.In conclusion, the molecular formula is more than just a simple notation; it encapsulates vital information about the composition and structure of molecules. Its applications range from basic scientific research to practical uses in industry and healthcare. As we continue to explore the complexities of chemistry, mastering the concept of the molecular formula will remain a cornerstone for students and professionals alike, enabling them to unlock the mysteries of matter and harness its potential for innovation.

在化学研究中，理解物质的组成对于许多应用至关重要，从制药到材料科学。这个领域的一个基本概念是分子式，它提供了一种表示分子中原子类型和数量的方法。分子式是一种简明的方式来传达关于化合物化学组成的信息，显示不仅涉及的元素，还确切存在的每种原子的数量。例如，水的分子式是H₂O，表明每个分子由两个氢（H）原子和一个氧（O）原子组成。分子式的重要性超越了简单的表示；它作为理解物质特性和行为的基础。不同的分子式可以导致具有独特特性的截然不同的化合物。以葡萄糖（C₆H₁₂O₆）和果糖（C₆H₁₂O₆）为例；虽然它们共享相同的分子式，但其结构差异导致在生物系统中具有不同的味道和功能。这说明即使是微小的原子排列变化也会产生深远的影响。此外，分子式在化学反应中反应物和产物之间的定量关系的化学计量学中也至关重要。通过了解反应中涉及物质的分子式，化学家可以预测需要多少每种反应物以及将形成多少产品。这在工业应用中尤为重要，因为效率和成本效益是首要考虑因素。此外，分子式在新材料和药物的开发中也发挥着关键作用。在药物设计中，例如，研究人员通常从特定的分子式开始，创造可以以期望的方式与生物靶标相互作用的化合物。理解分子式使科学家能够修改现有化合物或创造新的化合物，这些化合物可能提供更好的疗效或减少副作用。总之，分子式不仅仅是一个简单的符号；它包含了关于分子组成和结构的重要信息。它的应用范围从基础科学研究到工业和医疗保健的实际使用。随着我们继续探索化学的复杂性，掌握分子式的概念将始终是学生和专业人士的基石，使他们能够揭开物质的奥秘并利用其创新潜力。