Making a 70% Ethanol solution скачать в хорошем качестве

Making a 70% Ethanol solution

Support Video for BL0111 physiology module at King's College London IMPORTANT NOTE: When water and alcohol are mixed there is a physical contraction of the resultant volume. i.e. ethanol-water mixtures actually have less volume than the sum of their individual components at the given fractions. For example, mixing equal volumes of 100% ethanol and water results in only 1.92 volumes of mixture. Mixing ethanol and water is also exothermic. If you are making ethanol solutions for analytical chemistry you should familiarize yourself with these physical properties before using this simple technique for making solutions This is part of a series of tutorials designed to help research scientists in the use of certain software applications commonly used in scientific laboratory work. You can find the entire set of tutorial videos here: http://ehealth.kcl.ac.uk/sites/physio... The screencast videos have been made by the author (Dr James Clark, King's College London) in response to common questions raised by students on BSc and MSc courses and are recorded using Camtasia Studio. The content is targeted at students of all levels of undergraduate and postgraduate education as well as professional research scientists. If you wish to link to this video on another web site please make sure you credit the author and provide a link to the blog site (shown above) ©2013 James Clark, king's College London. All rights reserved.