active mass

简明释义

1. 有效质量; 2. 放射性材料;

英英释义

例句

1.In chemical reactions, the rate depends on the concentration of the active mass (活性物质).

在化学反应中，反应速率取决于活性物质的浓度。

2.The equilibrium constant can be derived from the active mass (活性物质) of the reactants and products.

平衡常数可以从反应物和产物的活性物质中推导出来。

3.A higher active mass (活性物质) often leads to faster reaction rates.

更高的活性物质通常会导致更快的反应速率。

4.The active mass (活性物质) in the solution was measured to determine its effectiveness.

溶液中的活性物质被测量以确定其有效性。

5.To increase the efficiency of the catalyst, we need to optimize the active mass (活性物质) present.

为了提高催化剂的效率，我们需要优化存在的活性物质。

作文

In the realm of chemistry, the concept of active mass plays a crucial role in understanding reaction rates and equilibria. The term active mass refers to the concentration of reactants and products in a chemical reaction, which directly influences how quickly a reaction occurs. Essentially, it is a measure of the amount of a substance that is available to participate in a chemical reaction at any given time. The higher the active mass, the more likely it is that molecules will collide with sufficient energy to initiate a reaction.To illustrate this concept, consider the example of a simple reaction between hydrogen and oxygen to form water. The reaction can be represented as: 2H₂ + O₂ → 2H₂O. In this case, the active mass of hydrogen and oxygen will determine the rate at which water is produced. If the concentration of hydrogen is increased, the active mass of hydrogen becomes greater, leading to an increased frequency of collisions between hydrogen and oxygen molecules. Consequently, this results in a faster formation of water.Moreover, the concept of active mass is not limited to just concentrations; it also encompasses factors such as temperature and pressure. For instance, increasing the temperature of a reaction typically increases the kinetic energy of the molecules involved, which in turn raises the active mass by promoting more frequent and energetic collisions. Similarly, in gas-phase reactions, altering the pressure can affect the concentration of gaseous reactants and thus their active mass.Understanding active mass is essential for chemists when they design experiments or industrial processes. It allows them to predict how changing conditions will affect the speed of reactions. For example, in the production of ammonia through the Haber process, chemists manipulate the active mass of nitrogen and hydrogen gases to maximize yield. By controlling the temperature and pressure, they can optimize the reaction conditions to increase the active mass of the reactants, thereby enhancing the rate of ammonia production.In conclusion, the idea of active mass is fundamental in the study of chemical kinetics and equilibrium. It provides valuable insights into how reactions occur and how they can be controlled. By manipulating the active mass of reactants and products, scientists can influence the efficiency and outcome of chemical reactions, making it a vital concept in both theoretical and applied chemistry. A thorough grasp of active mass not only enriches our understanding of chemical processes but also empowers us to innovate in various fields, from pharmaceuticals to environmental science.

在化学领域，活性质量的概念在理解反应速率和化学平衡方面起着至关重要的作用。术语活性质量指的是化学反应中反应物和产物的浓度，直接影响反应的速度。它本质上是对任何给定时间内可参与化学反应的物质数量的衡量。活性质量越高，分子碰撞以足够能量启动反应的可能性就越大。为了说明这一概念，可以考虑氢气与氧气反应生成水的简单反应。该反应可以表示为：2H₂ + O₂ → 2H₂O。在这种情况下，氢气和氧气的活性质量将决定水的生成速率。如果增加氢气的浓度，氢气的活性质量变得更大，从而导致氢气与氧气分子之间的碰撞频率增加。因此，这会导致水的形成速度加快。此外，活性质量的概念不仅限于浓度；它还包括温度和压力等因素。例如，提高反应的温度通常会增加参与反应的分子的动能，这反过来又通过促进更频繁和更有能量的碰撞来提高活性质量。同样，在气相反应中，改变压力可以影响气体反应物的浓度，从而影响它们的活性质量。理解活性质量对于化学家在设计实验或工业过程时至关重要。它使他们能够预测改变条件将如何影响反应的速度。例如，在通过哈伯法生产氨的过程中，化学家操控氮气和氢气的活性质量以最大化产量。通过控制温度和压力，他们可以优化反应条件以增加反应物的活性质量，从而增强氨的生产速率。总之，活性质量的概念在化学动力学和化学平衡的研究中是基础性的。它提供了关于反应如何发生以及如何控制反应的宝贵见解。通过操控反应物和产物的活性质量，科学家可以影响化学反应的效率和结果，使其成为理论和应用化学中的重要概念。透彻掌握活性质量不仅丰富了我们对化学过程的理解，还使我们能够在药物、环境科学等各个领域进行创新。