Chemistry is an essential branch of science that explores matter’s composition, structure, and properties and the changes it undergoes during chemical reactions. It plays a vital role in daily life, from medicine and environmental sustainability to technological innovation and industry. When it comes ...
Water is neutral, with a pH of 7; strong bases, or proton acceptors (such as sodium hydroxide, NaOH) have high pH values, some close to 14.0.Moles and Molarity For acid-base chemistry purposes, it is more appropriate to measure solute concentration in moles, or individual particles (e.g...
As the concentration of base increases, the pH typically rises slowly until equivalence, when the acid has been neutralized. At this point, adding more base causes the pH to rise rapidly. After equivalence has been reached, the slope decreases dramatically, and the pH again rises slowly with e...
When you hear the word "normality," science may not be the first thing that comes to mind. "Normal," to most people, means "ordinary" or "typical," and doesn't seem to have a whole lot of scientific weight. But in chemistry, the term normality is closely related to a few core che...
Learn how to calculate mass concentration, and see examples that walk through sample problems step-by-step for you to improve your chemistry knowledge and skills.
On the other hand, the concentration of 962 mg/L tells you exactly how much salt to weigh out when making the solution. This is a prime example of why knowing how to convert from mmol/L to mg/L (and visa versa) can be helpful in the lab. References Chemistry, LibreTexts: 16.8: ...
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Chemistry Solutions What Are Solutions? How and Why Do Things Dissolve? Determining the Concentration of a Solution Factors That Affect Solubility Dilutions When making a solution, it's handy to know if one thing will dissolve in another. After all, if somebody wants you to make them a liquid...
This concentration step should be carefully considered because analyte loss can occur for volatile or unstable components during the time of concentration. Identification of E&Ls (Qualitative Analysis) After obtaining an extract, appropriate analytical techniques should be used to identify the chemistry of...
When we are asleep, the area at the back of the throat sometimes narrows as the muscles relax, and even close off temporarily. The same amount of air passing through this smaller opening more rapidly can cause the tissues surrounding the opening to vibrate, which in turn can cause the sound...