stoichiometry

简明释义

英[ˌstɔɪkɪˈɒmɪtri]美[ˌstɔɪkɪˈɑːmətrɪ]

n. 化学计量学

英英释义

单词用法

同义词

反义词

例句

1.We will cover stoichiometry and solution chemistry this semester.

本学期下半学期我们将涵盖化学计量学和溶液化。

2.Stoichiometry of hydrogen didn′t influence the performance of the stack effectively.

氢气过量系数对电堆性能影响不大；

3.The thermal transfer characteristics in growth system and stoichiometry in melt and crystal must be investigated further in order to grow high quality crystals with larger diameter.

欲生长大直径、高质量单晶，仍须对热传输和化学计量等问题进行深入研究。

4.What I am going to do next day is go into the larger stoichiometry and understand the principles of mass balance and reactivity But before you go,hold it,I don't want you racing off.

下堂课我要做的是,讨论化学计量学，和,质量平衡很反应定律,但在下课之前，我不希望你们这么快走。

5.Plant N:P stoichiometry can effectively reflect the type of nitrogen or phosphorus limitation.

植物N：P化学计量学特征能够较好地反映氮、磷养分的限制作用。

6.This is what you started with, a, a So stroke stoichiometry give you a relationship, which you can use to plug into your differential equation here.

行程化学计量给你一个关系，你可以用来，代入进你的微分方程。

7.In chemistry class, we learned about stoichiometry 化学计量学 to calculate the amounts of reactants needed for a reaction.

在化学课上，我们学习了关于化学计量学 stoichiometry 的内容，以计算反应所需的反应物数量。

8.The lab experiment required us to apply stoichiometry 化学计量学 to determine how much product we could create.

实验室实验要求我们应用化学计量学 stoichiometry 来确定我们可以产生多少产品。

9.Understanding stoichiometry 化学计量学 is essential for predicting the yield of a chemical reaction.

理解化学计量学 stoichiometry 对于预测化学反应的产率至关重要。

10.The concept of stoichiometry 化学计量学 helps chemists understand the relationships between different substances in a reaction.

化学计量学 stoichiometry 的概念帮助化学家理解反应中不同物质之间的关系。

11.By using stoichiometry 化学计量学, we can balance chemical equations effectively.

通过使用化学计量学 stoichiometry，我们可以有效地平衡化学方程式。

作文

Understanding the concept of stoichiometry is essential for anyone studying chemistry. Stoichiometry refers to the calculation of reactants and products in chemical reactions. It is derived from the Greek words 'stoicheion,' meaning element, and 'metron,' meaning measure. This branch of chemistry allows scientists to predict the quantities of substances consumed and produced in a given reaction. By mastering stoichiometry, students can gain insights into the relationships between different elements and compounds, which is crucial for both theoretical and practical applications in chemistry.One of the fundamental principles of stoichiometry is the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. This means that the total mass of the reactants must equal the total mass of the products. To illustrate this, consider the simple reaction of hydrogen gas reacting with oxygen gas to form water:2H₂ + O₂ → 2H₂O.In this reaction, two molecules of hydrogen combine with one molecule of oxygen to produce two molecules of water. Here, stoichiometry allows us to determine that for every two moles of hydrogen, one mole of oxygen is required, resulting in the formation of two moles of water. This relationship can be expressed in terms of mass as well, enabling chemists to accurately measure the amounts of each substance needed to carry out a reaction.Another important aspect of stoichiometry is its application in real-world scenarios. For instance, in industrial chemistry, precise measurements are critical for optimizing reactions and minimizing waste. By using stoichiometry, chemists can calculate the exact amounts of reactants needed to produce a desired quantity of product. This not only enhances efficiency but also reduces costs and environmental impact.Moreover, stoichiometry plays a vital role in fields such as pharmacology, where accurate dosages of medications are crucial for patient safety. Understanding the stoichiometry of drug interactions helps pharmacists create effective treatment plans that maximize therapeutic effects while minimizing side effects.To master stoichiometry, students often start with balancing chemical equations, which is a critical skill in understanding how different substances interact. Once they can balance equations, they can then move on to calculations involving moles, mass, and volume. Practice problems are essential for reinforcing these concepts, as they allow students to apply their knowledge and develop problem-solving skills.In conclusion, stoichiometry is a foundational concept in chemistry that enables the calculation of reactants and products in chemical reactions. Its importance extends beyond the classroom, impacting various industries and applications in the real world. By gaining a thorough understanding of stoichiometry, students not only enhance their chemistry knowledge but also prepare themselves for future scientific endeavors. Whether in research, industry, or healthcare, the principles of stoichiometry are invaluable tools for any aspiring scientist.

理解化学计量学的概念对于任何学习化学的人来说都是至关重要的。化学计量学指的是在化学反应中对反应物和产物的计算。它源自希腊语单词“stoicheion”，意为元素，以及“metron”，意为测量。这一化学分支使科学家能够预测在给定反应中消耗和产生的物质数量。通过掌握化学计量学，学生可以深入了解不同元素和化合物之间的关系，这对于化学的理论和实际应用都是至关重要的。化学计量学的一个基本原则是质量守恒定律，它表明在化学反应中物质不能被创造或销毁。这意味着反应物的总质量必须等于产物的总质量。为了说明这一点，考虑氢气与氧气反应生成水的简单反应：2H₂ + O₂ → 2H₂O。在这个反应中，两分子氢气与一分子氧气结合生成两分子水。在这里，化学计量学使我们能够确定每两摩尔氢气需要一摩尔氧气，从而形成两摩尔水。这种关系也可以用质量来表达，使化学家能够准确测量进行反应所需的每种物质的量。化学计量学的另一个重要方面是它在现实世界场景中的应用。例如，在工业化学中，精确的测量对于优化反应和最小化浪费至关重要。通过使用化学计量学，化学家可以计算出生产所需产品的确切反应物量。这不仅提高了效率，还减少了成本和环境影响。此外，化学计量学在药理学等领域也发挥着重要作用，药物的准确剂量对患者安全至关重要。理解药物相互作用的化学计量学有助于药剂师制定有效的治疗方案，最大限度地提高治疗效果，同时减少副作用。要掌握化学计量学，学生通常从平衡化学方程式开始，这是理解不同物质如何相互作用的关键技能。一旦他们能够平衡方程式，就可以进行涉及摩尔、质量和体积的计算。练习题对于巩固这些概念至关重要，因为它们使学生能够应用所学知识并发展解决问题的能力。总之，化学计量学是化学中的基础概念，使得在化学反应中可以计算反应物和产物。它的重要性超越了课堂，对各种行业和现实世界的应用产生影响。通过深入理解化学计量学，学生不仅增强了他们的化学知识，还为未来的科学事业做好准备。无论是在研究、工业还是医疗保健领域，化学计量学的原理都是任何有志于成为科学家的人的宝贵工具。