Salicylic acid

Background This experiment was performed to determine the identity of an unknown organic liquid using physical constants: physical state, color, and odor, the solubility classification: water soluble or insoluble, the results of characterization tests: Lucas test, 2,4-Dinitrophenylhydrazine test, Bromine in Methylene Chloride test, and Ferric hydroxamate test, and analyses of spectral data: IR spectrum and HNMR . All testing samples were added to testing tubes for observation. Data was…

Introduction: The purpose of the experiment was to determine the density of powdered grape. The company Gatorade has advertised that G2 powder replenishes fluids and electrolytes in the body’s blood stream during exercise. G2 has aided in staying hydrated, “maintain normal muscle performance, heart rate and brain activity” (1). In relation, there has been a rise in sports drink purchase to improve athletic performance. The experiment examined a basic level of G2 powders composition, the…

The purpose of this lab is to calculate the chemical formula of a hydrate compound made up of copper, chlorine, and water molecules by using the law of definite proportions. The water of hydration of the copper chloride hydrate sample will be determined as well as the mass of copper and chlorine through a chemical reaction. The results will be used to calculate the moles of copper and chlorine and then the empirical formula of the compound. Techniques used: In this experiment, different…

as: color changes, precipitates, and gases. Those that did not have reactions were also useful in the deduction process. To fully understand how this elimination process works, one must have a better conceptual understanding of aqueous solutions, acid-base reactions, precipitates, and the solubility rules. An aqueous solution is any solution in which water is the solvent. Simply put, it dissolves in water. In order for a substance to dissolve in water, it must either match or exceed the…

Key concepts Chemistry Chemical reaction Acids Bases Water Introduction Have you ever had a refreshing bath with bubbles or bath salts? What if you could use chemistry to create a bath-time treat that incorporated both fizzing bubbles and soothing salts? Such a combination does exist, and it's called a bath bomb. If you have never experienced one, these "bombs" become fizzy when they touch the water. Why? It is due to a chemical reaction taking place between different ingredients within the…

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 acid…

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…

Table 1 provides the statistics for the first part of lab 11. In this section we used a 1:5 dilution of AdhP from our elution two. Using a spectrophotometer set to 280nm, the concentration of this dilution was found to be 0.08725uM and would be mixed with the various amounts of EtOH and NAD+. When mixed we were then allowed to observe the kinetics using spectroscopy set at 340nm. The data can be seen in Table 1 and Table 2. We were the able to plot this data using Excel thus creating Figures 1…

3. Explain how the following factors would affect the results of the lab. Give a specific direction of the effect on the formula you calculated and fully explain why this occurs. a. You did not heat the sample to a constant mass. If the sample was not heated to a constant mass, that means that there is still water trapped in the lattice structure of the hydrate. If the mass gradually increases after heating, this indicates water is being reabsorbed into the hydrate. Once the mass remained…

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…