molar weight

简明释义

分子量

英英释义

例句

1.The molar weight of water is approximately 18 grams per mole.

水的摩尔质量约为每摩尔18克。

2.Understanding the molar weight helps in stoichiometric calculations.

理解摩尔质量有助于化学计量计算。

3.In our chemistry lab, we often measure the molar weight of various substances for experiments.

在我们的化学实验室，我们经常测量各种物质的摩尔质量以进行实验。

4.To calculate the molar weight of a compound, you need to sum the atomic weights of its constituent elements.

要计算一个化合物的摩尔质量，需要将其组成元素的原子量相加。

5.The molar weight of sodium chloride is about 58.44 g/mol.

氯化钠的摩尔质量约为58.44克/摩尔。

作文

Understanding the concept of molar weight is essential in the field of chemistry. The term molar weight refers to the mass of one mole of a substance, typically measured in grams per mole (g/mol). This measurement is crucial for chemists as it allows them to convert between the mass of a substance and the number of moles present. For instance, if a chemist knows the molar weight of sodium chloride (NaCl) is approximately 58.44 g/mol, they can easily determine how many moles are contained in a given mass of salt. In practical applications, understanding molar weight helps in various chemical reactions and laboratory preparations. When conducting experiments, scientists often need to measure out specific amounts of reactants. By using the molar weight, they can ensure that they are using the correct proportions of each substance. This is particularly important in stoichiometry, where the balance of reactants and products must be maintained to achieve desired results.Moreover, the concept of molar weight extends beyond just individual substances. It plays a significant role in solutions and mixtures. For example, when preparing a solution, knowing the molar weight of the solute allows chemists to calculate the concentration accurately. This is vital in fields such as pharmaceuticals, where precise dosages are required for effective treatment.Additionally, the molar weight of a compound can provide insights into its molecular structure and composition. For example, a higher molar weight often indicates a more complex molecule with a larger number of atoms. This information can be useful when predicting the behavior of substances in reactions or when exploring new compounds in research.In summary, mastering the concept of molar weight is fundamental for anyone involved in the sciences, particularly chemistry. It serves as a bridge between the macroscopic world of grams and the microscopic world of atoms and molecules. By understanding how to calculate and apply molar weight, scientists can carry out experiments more effectively, ensuring accuracy and reliability in their work. Whether in academic research or industrial applications, the importance of molar weight cannot be overstated. It is a cornerstone of chemical education and practice, and a thorough grasp of this concept is essential for success in the field.

理解摩尔质量的概念在化学领域中至关重要。术语摩尔质量指的是一种物质一摩尔的质量，通常以克每摩尔（g/mol）为单位测量。这一测量对于化学家而言至关重要，因为它使他们能够在物质的质量和存在的摩尔数之间进行转换。例如，如果化学家知道氯化钠（NaCl）的摩尔质量大约为58.44 g/mol，他们可以轻松确定给定质量的盐中包含多少摩尔。在实际应用中，理解摩尔质量有助于各种化学反应和实验室准备。当进行实验时，科学家通常需要准确测量出特定数量的反应物。通过使用摩尔质量，他们可以确保使用每种物质的正确比例。这在化学计量学中尤其重要，因为必须保持反应物和产品的平衡，以实现预期的结果。此外，摩尔质量的概念不仅限于单一物质。它在溶液和混合物中也发挥着重要作用。例如，在准备溶液时，了解溶质的摩尔质量可以使化学家准确计算浓度。这在制药等领域至关重要，因为有效治疗需要精确的剂量。另外，化合物的摩尔质量可以提供其分子结构和成分的见解。例如，较高的摩尔质量通常表明分子更复杂，原子数量更多。这些信息在预测物质在反应中的行为或在研究中探索新化合物时非常有用。总之，掌握摩尔质量的概念对于任何从事科学工作的人，尤其是化学领域的人来说都是基础。它作为克与原子、分子微观世界之间的桥梁。通过理解如何计算和应用摩尔质量，科学家可以更有效地进行实验，确保工作中的准确性和可靠性。无论是在学术研究还是工业应用中，摩尔质量的重要性都不容小觑。它是化学教育和实践的基石，深入掌握这一概念对于在该领域取得成功至关重要。