Kevin A pressure-equalizing dropping funnel (also called a pressure-equalizing addition funnel) is a type of laboratory glassware used for the controlled addition of liquids to a reaction mixture while maintaining equal pressure between the funnel and the reaction vessel. It consists of a graduated glass funnel, which allows for precise measurement and controlled addition of liquids … Read more
In a laboratory setting, handling hot, hazardous, or delicate materials requires precision and care. Chemistry tongs are essential tools designed to safely grip, transfer, and manipulate various objects, from heated glassware to small chemical samples. These tongs come in different shapes and sizes, each suited for specific tasks to ensure both efficiency and safety in … Read more
Chemistry and physics are two fundamental branches of science that explore the natural world, each with a distinct perspective. Chemistry focuses on the properties, composition, and reactions of matter, while physics seeks to understand the fundamental laws governing the behavior of matter and energy in the universe. Despite their differences, these fields are deeply interconnected … Read more
When studying other scientific disciplines, such as biology, physics, geology, agriculture, engineering, medicine, and so forth, you will notice that chemistry is an integral part of your curriculum. This is because chemistry is fundamental to the understanding of these disciplines. Chemistry serves as a bridge between other scientific disciplines and that’s why it is often … Read more
Just as science is divided into different fields, chemistry is also segmented into various branches. There are five main branches of chemistry: organic chemistry, inorganic chemistry, physical chemistry, analytical chemistry, and biochemistry. These branches form the foundation of chemical study, each focusing on different aspects of the subject, from the behavior of molecules to chemical … Read more
1. Problem # 1 Chlorine -35 forms 75% of the total mass of chlorine and chlorine-37 forms 25%. Calculate the relative atomic mass of chlorine. Solution Consider a sample containing about 100 atoms of chlorine: 75 atoms will each have a mass of 35, which means that their total mass will be 35 X 75 … Read more
Oxygen is an essential element for various scientific and industrial processes. In the laboratory, it is commonly prepared using a few established methods, each leveraging chemical reactions to produce this vital gas. 1. From Hydrogen Peroxide The most common method of preparing oxygen in the lab is catalytic decomposition of hydrogen peroxide. At room temperature, … Read more