PPT-Erlenmeyer Flask

An E rlenmeyer F lask is a coneshaped container with neck so you can hold the flask or attach a clamp or use a stopper They are used to measure mix and store liquids The shape makes this flask very stable They are one of the most common and useful pieces of chemistry lab glassware Most Erlenmeyer flasks are made of borosilicate glass so that they can be heated over a flame or autoclaved The most common sizes of Erlenmeyer flasks probably are 250 ml and 500 ml They can be found in 50 125 250 500 1000 ml You can seal them with a cork or stopper or place plastic or paraffin film or a watch glass on top of them. Chemistry: The Molecular Nature of Matter, 6. th. edition. By . Jesperson. , Brady, & . Hyslop. acid. –base, 198–199, 811–. 819. redox . reactions, 239–240. Titration. Titrations are a type of . Powered by Toni Yordanov. This project has been funded with support from the European Commission.. This publication [communication] reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.. Specific . gravity determination. By:. Eng. Othman . Tayeh. . . Eng. . Doaa. Safi. .. 1. Purpose. : . . Determine . the specific gravity of soil which is important in calculating void ratio, porosity, unit weight, degree of saturation ……etc.. Version 2.0 flask shakerSF1 English flask shakerSF1 Speed controllerTimer Mains On/OffIndicator light Flask shakerInstructions for useIntroductionThank you for purchasing this piece of Stuart equipmen An experiment. To find the mass of the air. A round-bottom flask containing air was weighed.. A vacuum pump was used to extract air from the flask.. The flask was weighed again with the air removed.. Method: 2) Wash the flask with media without serum. Add 1/2 volume of media without serum to the side of the flask opposite the cells. Tip the media onto the cells to rinse them. Remove and disc Sams. , Abbie Stallings, Ben Duncan, Leslie Probus, and Cassie . Blandford. . Effect of Temperature on Catalase Activity Rate . Research. Research that has been done on this has shown that . the . heat from the heated hydrogen peroxide creates more kinetic energy, making the enzymes move faster in the solution so they collide with more substrates, creating a faster reaction. The opposite is present with the cold water, slowing the enzymes, so they collide at a slower rate. The room temperature would act as a control to see how everything would compare versus normal conditions.. Dewar Flasks – Vacuum Walls. http://. static.coleparmer.com. http://. en.wikipedia.org. /wiki/. Vacuum_flask#. Safety. The walls of a . dewar. flask contain a gap that is partially evacuated of air, creating a near-vacuum to prevent heat transfer.. of a Ternary Mixture. Purpose of the Experiment. To . separate. the components of a mixture . of . sand, sodium chloride,. and . calcium . carbonate. and to . calculate. both the. percentage of each. Part 1: An Empty Soda Can. 1. A small amount of water (5 mL) is added to an empty soda can.. 2. The soda can is placed on a hot plate, and heated until steam is observed coming out of the mouth of the can.. Complexometric. Titrations. Dr. Prem D. Sattsangi. Copyright © 2009. Exp.#5 . Ion-Exchange Separations . of . CuCl. 4. -2. , . CoCl. 4. -2. complexes. AMBERLITE: IRA-400 with . Copper. and . Cobalt. the process of determining the molarity of an acid or base by using an acid-base reaction where one reactant is of known molarity. .. Get your lab book and copy the lab.. Title. : Acid/Base Titration. There are a variety of common sizes (50-, 100-, 250-, 600- mL and 1-liter). These beakers are made of clear, borosilicate glass for durability, chemical-, and temperature-resistance.. Used for:. .