average molecular weight

简明释义

平均分子量

英英释义

例句

1.In drug formulation, the average molecular weight can affect the absorption rate of the medication.

在药物配方中，平均分子量会影响药物的吸收速度。

2.To calculate the average molecular weight, we need to consider the distribution of different molecular species.

要计算平均分子量，我们需要考虑不同分子种类的分布。

3.Researchers measured the average molecular weight of the synthesized compound to ensure it met the required standards.

研究人员测量了合成化合物的平均分子量以确保其符合要求的标准。

4.The average molecular weight of a protein can influence its function and interaction with other molecules.

蛋白质的平均分子量可以影响其功能及与其他分子的相互作用。

5.The average molecular weight of the polymer determines its properties in various applications.

聚合物的平均分子量决定了其在各种应用中的特性。

作文

Understanding the concept of average molecular weight is crucial in various fields of science, especially in chemistry and biology. The average molecular weight refers to the weighted average mass of the molecules in a given sample, taking into account the different isotopes and their abundances. This measurement is essential for determining how substances will react with one another, as well as for predicting the behavior of compounds in different environments.In chemistry, the average molecular weight plays a significant role in stoichiometry, which is the calculation of reactants and products in chemical reactions. For instance, when chemists synthesize a new compound, knowing the average molecular weight allows them to accurately measure out the correct amounts of each reactant. If they fail to do so, the reaction may not proceed as expected, leading to incomplete reactions or unwanted by-products.Moreover, in biological sciences, the average molecular weight is used to understand the properties of proteins and nucleic acids. Proteins, which are made up of amino acids, have varying molecular weights depending on their composition and structure. By calculating the average molecular weight of a protein, researchers can gain insights into its function and interactions within the cell. For example, enzymes often have specific average molecular weights that correlate with their activity levels, providing clues about their efficiency in catalyzing biochemical reactions.The determination of average molecular weight can be achieved through several methods, including mass spectrometry and gel permeation chromatography. Mass spectrometry is a powerful technique that ionizes chemical species and sorts them based on their mass-to-charge ratio. This method provides highly accurate measurements of the average molecular weight of complex mixtures, allowing scientists to identify and quantify different components within a sample.On the other hand, gel permeation chromatography separates molecules based on their size. Larger molecules elute from the column faster than smaller ones, enabling the calculation of the average molecular weight of polymers or other macromolecules. Understanding the average molecular weight of these substances is vital for applications in materials science, where the properties of polymers can significantly influence their performance in various applications.In conclusion, the average molecular weight is a fundamental concept that intersects multiple scientific disciplines. Its importance cannot be overstated, as it impacts everything from chemical reactions to biological functions and material properties. As scientists continue to explore the complexities of matter, the understanding of average molecular weight will remain a key element in their research and applications. By mastering this concept, students and professionals alike can contribute to advancements in science and technology, paving the way for innovative solutions to real-world problems.

理解平均分子量的概念在科学的各个领域，尤其是化学和生物学中至关重要。平均分子量是指在给定样本中，考虑不同同位素及其丰度后，分子的加权平均质量。这个测量对于确定物质之间的反应以及预测化合物在不同环境中的行为至关重要。在化学中，平均分子量在化学计量学中发挥着重要作用，化学计量学是计算化学反应中的反应物和产物的过程。例如，当化学家合成一种新化合物时，知道平均分子量可以让他们准确地测量出每种反应物的正确数量。如果他们没有做到这一点，反应可能不会按预期进行，导致反应不完全或产生不必要的副产品。此外，在生物科学中，平均分子量用于了解蛋白质和核酸的特性。蛋白质是由氨基酸组成的，具有不同的分子量，具体取决于其组成和结构。通过计算蛋白质的平均分子量，研究人员可以深入了解其功能及其在细胞内的相互作用。例如，酶通常具有特定的平均分子量，与其活性水平相关，提供有关其在催化生化反应中的效率的线索。平均分子量的测定可以通过多种方法实现，包括质谱法和凝胶渗透色谱法。质谱法是一种强大的技术，可以对化学物质进行电离，并根据其质量与电荷比进行排序。这种方法提供了复杂混合物的平均分子量的高度准确测量，使科学家能够识别和量化样本中的不同成分。另一方面，凝胶渗透色谱法根据分子大小分离分子。较大的分子比较小的分子更快地从柱中洗脱，从而能够计算聚合物或其他大分子的平均分子量。了解这些物质的平均分子量对于材料科学中的应用至关重要，因为聚合物的性能可能会显著影响它们在各种应用中的表现。总之，平均分子量是一个基本概念，交叉多个科学学科。它的重要性无法过分强调，因为它影响从化学反应到生物功能和材料特性的方方面面。随着科学家们继续探索物质的复杂性，对平均分子量的理解将始终是他们研究和应用中的关键要素。通过掌握这一概念，学生和专业人士都可以为科学和技术的进步做出贡献，为解决现实世界的问题铺平道路。