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Physical DescriptionAn Erlenmyer Flask (named after Emil Erlennmeyer) is a common piece of laboratory glassware since 1861. It is also known as as a conical flask or E-flask. It has a conical body, flat base and a narrow cylindrical neck. The flask is usually marked to indicate the approximate volume of their contents.The flask is chosen to replace a beaker if there is a need to stopper the contents. The narrow neck is sized to accept standard rubber stoppers or corks.The conical shape and narrow neck facilitates stirring by swirling.The small neck reduces evaporates losses. The neck may be fitted with side tubes to allow the extraction of produced gasesThe flat bottom improves stability on lab benches. A Florence flask has a similar overall use but is more unstable because the body is round and the base is smaller.UsesErlenmeyer flasks are used for:pH tit rationsthe preparation of mixtures which must be mixed without Starr
you put the blob off a blob off the substance you want to test on to a piece of chromotography paper about 10mm from the bottom then fill a flask about 20mm and let the bottom of the paper sit in the water if the substance is pure then there will only be one colour goes up the paper.
Take a piece of paper and cut it in half (anywhere will do) and you will have two pieces of paper - and your original piece of paper has changed shape.
A solution of amino acids is spotted onto a piece of chromatography paper which is then placed into a container filled with a suitable solvent. A dye is used so that the position of the amino acids along the piece of paper can be seen. The distances travelled by the amino acids are measured to calculate their retention factors (Rf) values. These are then compared to known standards.
tearing a piece of paper is a physical change because when you rip it,it is still a piece of paper but lets say that u burn a piece of paper its a chemical change couse you cant change it back to wood again
pipette, bath, bunsen burner, conical flask, thermometer, u.i soln.
Physical DescriptionAn Erlenmyer Flask (named after Emil Erlennmeyer) is a common piece of laboratory glassware since 1861. It is also known as as a conical flask or E-flask. It has a conical body, flat base and a narrow cylindrical neck. The flask is usually marked to indicate the approximate volume of their contents.The flask is chosen to replace a beaker if there is a need to stopper the contents. The narrow neck is sized to accept standard rubber stoppers or corks.The conical shape and narrow neck facilitates stirring by swirling.The small neck reduces evaporates losses. The neck may be fitted with side tubes to allow the extraction of produced gasesThe flat bottom improves stability on lab benches. A Florence flask has a similar overall use but is more unstable because the body is round and the base is smaller.UsesErlenmeyer flasks are used for:pH tit rationsthe preparation of mixtures which must be mixed without Starr
A bullet
If you place a potato on an piece of unprinted paper in the microwave oven, the potato would heat up, the paper would not.
The triangular shape of the Erlenmeyer flask aids in the mixing of the liquid inside. When you swirl the flask, the liquid moves up the sides without coming out the top. They are used in applications where solutions must be mixed multiple times. When doing a titration analysis, small amounts of reactant are added to a solution, usually until an indicator changes color, and the solution must be mixed after every addition. When making a dilution of a stock solution, the easiest way is to add a measured amount of stock to a measured amount of solvent in an Erlenmeyer and swirl to ensure thorough mixing. Erlenmeyer flasks are often used to heat liquids with a Bunsen burner. For that purpose, the flask is usually placed on a ring held to a ring stand by means of a ring clamp. A wire gauze mesh or pad is usually placed between the ring and the flask.
The plural of a piece of paper is "pieces of paper."
you put the blob off a blob off the substance you want to test on to a piece of chromotography paper about 10mm from the bottom then fill a flask about 20mm and let the bottom of the paper sit in the water if the substance is pure then there will only be one colour goes up the paper.
Physical DescriptionAn Erlenmeyer Flask (named after Emil Erlennmeyer) is a common piece of laboratory glassware since 1861. It is also known as as a conical flask or E-flask. It has a conical body, flat base and a narrow cylindrical neck. The flask is usually marked to indicate the approximate volume of their contents.The flask is chosen to replace a beaker if there is a need to stopper the contents. The narrow neck is sized to accept standard rubber stoppers or corks.The conical shape and narrow neck facilitates stirring by swirling.The small neck reduces evaporative losses. The neck may be fitted with side tubes to allow the extraction of produced gasesThe flat bottom improves stability on lab benches. A Florence flask has a similar overall use but is more unstable because the body is round and the base is smaller.UsesErlenmeyer flasks are used for:pH titrationsthe preparation of mixtures which must be mixed without stirringDisadvantages:The Erlenmeyer is often stirred with a glass rod even though swirling is more often suggested. Inexperience students often do this while holding the flask at near eye level. A tap with the rod will knock the bottom off dumping the (usually nasty poisonous, hot and corrosive) contents all over the students legs.Erlenmeyer flasks are used to measure, mix, and store liquids.
you have to look at the piece of paper and the things that are on the piece of paper follow it
A florence flask (also known as a boiling flask) is a type of flask. It is a piece of laboratory glassware. It can hold chemical solutions. The flask has a round body with a long neck. The flask usually come in volumes of 1 liter. It is similar in shape and function to a round bottom flask. See the Web Links and Related Questions to the left for more information.
The answer depends on the piece of paper. You can cut it in half lengthways: it will still be a piece of paper but its width will be half as large!
A folded piece of absorbent material, such as paper or cloth, that is placed between a baby's legs and fastened at the waist to contain excretions.