Acetic anhydride

3-(benzylideneamino)-2-phenylquinazolin-4-(3H)-one 5 (a-j) A mixture of 3-amino-2-phenyl-3H-quinazoline-4-one as well as its substituted analogs (3-4) and the appropriate aromatic aldehydes dissolved in ethanol (50 mL) containing few drops of glacial acetic acid were heated under reflux for 7-8 hr. The solution was cooled and the precipitated solid was obtain, filtered, and washed with water, dried in vacuum and recrystallized from ethanol 2, 3.…

Overview: A fair test is conducted to determine how much bicarb soda is needed to extinguish a tea-light candle when mixed with vinegar. When bicarb soda and vinegar are mixed together a chemical reaction is made thus extinguishing a lit candle, the candle is blown out as bicarb soda and vinegar creates carbon dioxide. A candle needs oxygen to burn, however when carbon dioxide is poured above the flame the candle will quickly be put out, as carbon dioxide is a heavier gas. Aim: To…

Post-lab: Recrystallization of benzoic acid Calculations: I initially poured 1.10 grams of impure acid into my flask. After the experiment was done, I had 0.54 grams of pure benzoic acid. This gives a difference of 1.10-0.54=0.56 g and a percentage of (0.54/1.10)*100=49.09% The true melting point of pure benzoic acid is 122.41°C and I received 126.9°C as my melting point. This gives a difference of 126.9°C-122.41°C=4.49°C and a percentage of (122.41/126.9)*100=96.46% Results: Impure benzoic…

In our Chemistry class, we the students had performed an experiment that involves with a soda can, being crushed. Going step by step, our group simply placed small amounts of water into the soda can. Then we placed the soda can on a hot surface which allowed the water to boil. Once the water was boiling, our group witnessed the steam coming out from the opening on top of the soda can and one of us picked up the soda can with beaker tongs. We quickly submerged it into cold water and the instant…

The extraction lab began with a .517g mixture of benzoic acid, p-nitroaniline, and azobenzene charged in a 125 mL Erlenmeyer flask mixed with 50 mL of Et2O. Once dissolved, the mixture is transferred the mixture into separatory funnel and begin acid extraction. 15 mL of 3 M HCl is added to the separatory funnel and inverted until a phase boundary is present. An additional 15 mL of 3 M HCl was then added and inverted again. The aqueous layer was removed through the separatory funnel and placed…

Abstract This experiment was a study of the different properties of a lipid bilayer. We used fluorescent microscopy to study the lateral diffusion of lipids and binding properties biotin and anti-biotin. The effect cholesterol has on the fluidity of the membrane was tested using Fluorescent Recovery After Photobleaching (FRAP). We used a Nikon Eclipse 50i upright fluorescent microscope with a Digital Sight DM-2MBW CCD camera to take images of the bilayer after photobleaching. Using these images…

This thesis mainly focused on analysis approaches of twenty potential isomeric and designer drugs of 1-pentylacylindoles series of synthetic cannabinoids compounds associated mainly with naphthoylindoles and benzoylindoles structures, via using various analytical methods. These isomers and analogs represent potential designer modification of banned drugs and show the same elemental composition and yielding identical nominal, exact masses and general analytical properties which make the potential…

I learned from this activity that the dose-response curve is used to measure the relationship between the quantity of a substance (the dose) and its overall effect (the response). I was able to recognize that dose and response are related by practicing the relationship on a graph. The dose is placed on the X-axis as the concentration of substance while the response is placed on the Y-axis as a percentage. In the example that we have in step 1, the dose that results in 50% mortality of subjects…

PH levels are a measure of how acidic or basic your beverage is. They show what beverages are more acidic, like soda, and what beverages are more basic, like water. It’s measured on a scale from one to fourteen. One through six are the acid levels, seven is the only neutral level, and eight through fourteen are the basic levels. First, get 2 drinks of choice and pour them into two different cups. Then, record its pH level, as well as the room temperature. Next, take another liquid and mix it…

As a group we have taken two sterile plastic vials and placed a cup of Drosophila medium powder into each one. After adding a cup of the medium with added half a cup of distillated water into the plastic vial, which allowed the medium to dissolve into it. We allowed a few minutes for the media to be absorbed and afterwards we applied a cotton plug to close the entrance to the vial. Anesthetizing the Drosophila flies In the lab, we had the fruit flies already asleep in a green bucket filled all…