erlenmeyer flask definition
092baf2d9fa344b3080eb27cefe069b4
Erlenmeyer flask Medical Definition of Erlenmeyer flask. : a flat-bottomed conical flask whose shape allows the contents to be swirled without danger of spilling.
96da04a1b92940550ae18ea32a3fc09c
Erlenmeyer flask medical Definition of Erlenmeyer flask : a flat-bottomed conical flask whose shape allows the contents to be swirled without danger of spilling Biographical Note for erlenmeyer flask Erlenmeyer play \ ˈer-lən-ˌmī(-ə)r, ˈər-\, Richard August Carl Emil (1825–1909), German chemist. Erlenmeyer was one of the important figures of modern organic chemistry. He produced important works in both experimental and theoretical organic chemistry. His research concentrated on the synthesis and constitution of aliphatic compounds.
2266411c21eb0e50e1fb08f862d18938
DETERMINATION OF THE DISTRIBUTION CONSTANT OF IODINE BETWEEN WATER AND CYCLOHEXANE 2. Carefully measure 10.0 mL of the iodine solution in a graduated cylinder and transfer to a 250 mL Erlenmeyer flask. Rinse the graduated cylinder with a few milliliters of deionized water and pour the water into the flask. Add a few crystals of potassium iodide (KI).. Repeat Step 4 with a second 50.0 mL sample of iodine solution and 8.0 mL of cyclohexane. 6. Remove the cyclohexane layer (upper layer) with a Pasteur pipet [CAUTION: its tip is very sharp] from the first test tube into a beaker. Then pour 25.0 mL of the water layer into a clean, dry graduated cylinder.
e075cc9c9bb09126d77c8415d337d358
Chemistry Lab Question about Measuring Gas!? In this week's experiment you will determine the molar mass of carbon dioxide by measuring the mass of an Erlenmeyer flask full of the gas. The mass of an empty Erlenmeyer flask and stopper was determined to be 52.12 grams. When filled with distilled water, the mass was 300.7 grams.
1d9f89d6383f936b4506d66fa3b5f2ae
- Louis Pasteur ended the debate with his famous swan-neck flask experiment, which allowed air to contact the broth. Microbes present in the dust were not able to navigate the tortuous bends in the neck of the flask.
aa84abbc196b0e7b9b5ec9b5306973de
beaker Definition of beaker. 1  1 : a large drinking cup that has a wide mouth and is sometimes supported on a standard. 2  2 : a deep widemouthed thin-walled vessel usually with a lip for pouring that is used especially in science laboratories.
bc5dcaf3092da24ec9d747b52409e4e5
erudite He wasn't bashful about showing himself to be feverishly erudite, … terminally droll, and a wizard phrasemaker. —Susan Sontag, New Yorker, 18 & 25 June 2001 … an engaging fellow: erudite, entertaining, intolerant of trendiness and
ede9ee66cf040671e97f438b5488464a
Glossary of chemistry terms 1 entropy-the amount of energy not available for work in a closed thermodynamic system (usually symbolized as S). 2  enzyme-a protein that speeds up (catalyses) a reaction. 3  Empirical Formula-also called the simplest formula, gives the simplest whole-number ratio of atoms of each element present in a compound.
525e6a9ef4a95b648a49913ed6257724
Liquids: Simple Distillation, Fractional Distillation, and Gas Chromatography A simple distillation apparatus will be set up will a cooled vial as a receiver. A 3 mL sample of the unknown mixture of cyclohexane and toluene will be added to the 5 mL short-necked flask along with several boiling chips.
7b6896ef9b930e0acd05cca8e3d4674a
Erlenmeyer flask For the episode of The X-Files, see The Erlenmeyer Flask. Erlenmeyer flask. An Erlenmeyer flask, also known as a conical flask (BrE) or titration flask, is a type of laboratory flask which features a flat bottom, a conical body, and a cylindrical neck. It is named after the German chemist Emil Erlenmeyer (1825–1909), who created it in 1860.
105064de31dc8b5c1e67e2851ef36ded
flask Definition of flask. : a container often somewhat narrowed toward the outlet and often fitted with a closure: such asa : a broad flattened necked vessel used especially to carry alcoholic beverages on the personb British : thermos.
1201d93c10c519cbd7be5eab98da1da5
Acid-Base Titrations A typical titration proceeds in the following way. A specific volume of the solution to be titrated (solution 2) is poured into an Erlenmeyer flask (Figure 1). For example, 25.00 mL of a nitric acid solution of unknown concentration might be added to a 250 mL Erlenmeyer flask.
bfc1c4925e0515d59caef1bab9a909b1
How we get BC (Before Christ) and AD (Anno Domino).How many years are there in BC time? Anno Domini. The terms anno Domini (AD) and before Christ (BC) are used to label or number years in the Julian and Gregorian calendars. The term anno Domini is Medieval Latin and means in the year of the Lord, but is often translated as in the year of our Lord.
cc5c19128b8456e5afb20290e1535478
Flask Flasks are used to contain substances. They are usually made of glass or borosilicate glass (Pyrex). They can be used to heat the substance inside of them. There are many different types of laboratory flasks. They differ in their shape and what they are used for.
390b139b11e5d9e80803c75e3232918b
What is a utility clamp when used in chemistry the main one. James Chadwick. The function of the utility clamp is to hold certain size chemistry items in place: erlenmeyer flasks or test tubes, for example. It has both an end to hold flasks and other glassware as well as an end to attach to a stand or other surface.
408618fc2595ac48350e03d33d917f2c
Syneresis (chemistry) (February 2015). Syneresis (also spelled 'synaeresis' synæresis 'or'), synaeresis in, chemistry is the extraction or expulsion of a liquid from a, gel as when serum drains from a contracting clot of. bloodn dentistry, syneresis is the expulsion of water or other liquid molecules from dental impression materials (Alginate for example) after an impression has been taken. Due to this process, the impression shrinks a little and therefore its size is no longer accurate.
e5356a65703e8c326769c4e52e02e36e
UNITED STATES DEPARTMENT OF LABOR 4.4. Instrument response to MEK peroxide The instrument response to MEK peroxide over the range of 0.5 to 2 times the target concentration is linear with a slope of 120700 area counts per µg/mL for the dimer and 113213 area counts per µg/mL for the monomer.repare stock solutions of monomer and dimer in 2-propanol. The concentration should be approximately 5 mg/mL. Place 20 mL of 2-propanol, 2 mL of glacial acetic acid, and 0.5 g of potassium iodide in a 500-mL Erlenmeyer flask. Add 1.0 mL of the MEK peroxide stock solution.
c0c062302df91afdd63b08a0703c5201
File:Erlenmeyer flask.svg {{Information |Description={{en|1=An Erlenmeyer flask about one-third full with a green fluid}} |Source=Own work by uploader |Author=Leevclarke |Date=2008-12-03 |Permission= |other_versions= }} Created in Inkscape <!--{{ImageUpload|ful
ed42673ff6be24831195a88658e58300
retort 1 1 a vessel, commonly a glass bulb with a long neck bent downward, used for distilling or decomposing substances by heat.  a refractory chamber, generally cylindrically shaped, within which some substance, as ore or coal, is heated as part of a smelting or manufacturing process.
4793992e49d872c5641dc0b153922603
Volumetric Flask It is used to make up a solution to a known volume. Volumetric flasks measure volumes much more precisely than beakers or erlenmeyer flasks. A volumetric flask is labeled with the accuracy of the measurement it can deliver.
a9f268e1d5ae0a57a94c3b945b4c3a73
- Used for weighing substances or objects, usually in grams. erlenmeyer flasks. Used to heat, mix, and store liquids. The advantage to the Erlenmeyer Flask is that the bottom is wider than the top so it will heat quicker because of the greater surface area exposed to the heat.
5474a30d92995e075e77c2d23352e7cd
Initiation-response-feedback (IRF) Initiation-response-feedback (IRF) Submitted 8 years 4 months ago by admin. Initiation-response-feedback, or IRF, is a pattern of discussion between the teacher and learner. The teacher initiates, the learner responds, the teacher gives feedback. This approach to the exchange of information in the classroom has been criticized as being more about the learner saying what the teacher wants to hear than really communicating.
fa89bc3ac768db21b5f11e5d0a6143be
- Flehmen response. The flehmen response (/ˈfleɪmən/; German: [ˈfleːmən]), also called the flehmen position, flehmen reaction, flehming, or flehmening, is a behavior in which an animal curls back its upper lip exposing its front teeth, inhales with the nostrils usually closed and then often holds this position for several seconds.
c4fb377575b55e0e9c275a73ccd11eb0
Lab equipment names and descriptions watch glass. a curved glass piece which is used as a beaker cover or is used in evaporating very small amounts of liquid. thermometer. a glass tube containing a liquid which expands and rises in the tube as the temperature increases—the scale is usually marked in units of Celsius or Fahrenheit.
7f6dbdd0643966823b7ce29ac0fbb16e
Erlenmeyer Flask: Function & Dimensions These tools range from complex and sophisticated machines to simple, basic equipment. Basic equipment is necessary for routine experimentation and routine measurements. One of these basic pieces of equipment includes the Erlenmeyer flask, which is commonly found in most scientific laboratories. Let's discuss the Erlenmeyer flask and its uses in scientific experimentation.
24b46a85cfdfe77719aa9c98d5734284
Calorimeter Calorimeter - Reaction calorimeters. 1  A reaction calorimeter is a calorimeter in which a chemical reaction is initiated within a closed insulated container. 2  The cooling/heating jacket controls either the temperature of the process or the temperature of the jacket. 3  The cooling/heating jacket controls the temperature of the process.