b. tap water-homogeneous c. blood-heterogeneous d. house paint-homogeneous 3.In a solution, which component is considered the solvent? Which is the solute? The primary ingredient in a solution is called the solvent, and the other ingredients are the solutes and are said to be dissolved in the solvent. 4.Name the solvent and solute(s) in the following solutions a. carbonated water b. apple juice c. coffee d. salt water 5.Does a solution have to involve a liquid? Explain your answer.
Limonene, the chief component of orange oil, is widely used as a fragrance and flavoring, as well as a cleaning solvent. Limonene, a naturally occurring hydrocarbon, is a cyclic monoterpene, a class of natural products biosynthesized by the assembly of isoprene units into various structures. Many terpenes are responsible for the odors of plants like eucalyptus, pine, mint, lavender, rose, and others. Organic chemists use terpenes and other natural products as chiral starting materials for complex chemical syntheses or as inspirations for pharmaceuticals. Some natural products are attractive synthetic targets because of interesting or unusual structural features or medicinal applications.
With these solutions, the students were able to test whether not the amylase continues to break down starch with the presence of the carb cutter. Amylase mimics the enzyme activity that occurs in the body upon starch. The carb-cutter acts as the diet pills. The I2KI was used to add color to the solution. It binds with starch so the more starch, the darker the solution was.
Use a new glucose strip and record Data: Conclusion: According to my data, pH levels do, in fact, affect the results of Lactex. I say this because in my experiment, pre-enzyme, my solutions were all negative except for the soda. I used the test strips to determine if they were negative or positive solutions. After I put in the enzyme, Lactex, my results changed. Vinegar, Antacid, and Soap all became positive solutions after I put in the enzyme.
Rather, overtime the dried seaweed would soften with the water and form a mixture. 3. Define: a. Decant- gradually pour from one container to another, leaving the solid behind. b. Filtrate- a liquid that has passed through a filter c. Extract- a preparation containing an active ingredient of a substance in concentrated form d. Precipitate- the formation of a solid in the reaction of a solution e. Tincture- a medicine derived by dissolving a drug in alcohol Notebook (Photocopies included) Observations: -Iodine crystals- glittery, brown-black in color, small pieces with a length of about 4 mm and thickness of about 2 mm, brittle -Fucus seaweed- dry, dark green, strong pungent scent, stiff, easily snapped into two pieces -Tincture- brown liquid, strong alcohol scent, fairly thin and runny -Isopropyl alcohol- clear liquid, alcohol smell Observation of reagents, starting materials and changes during extraction: We broke the dried seaweed into small
Aspirin originally was derived by boiling the bark of the white willow tree. Although the salicin in willow bark has analgesic properties, purified salicylic acid was bitter and irritating when taken orally. Salicylic acid was neutralized with sodium to produce sodium salicylate, which was better-tasting but still irritated the stomach. Salicylic acid could be modified to produce phenylsalicylate, which was better tasting and less irritating, but released the toxic substance phenol when metabolized. By law, all drugs sold in the United States must meet purity standards set by the Food and Drug Administration, so all aspirin is essentially the same.
TEA EXTRACTION Esthephanie Peralta October, 7 CHEM 2583-04 The purpose of this lab is to extract caffeine from a tea bag. Structures Compounds used for the experiment Reference The Merck Index Online structures from Chemsketch Caffeine Calcium Chloride CaCl2 CCl2H2 M.P. 230C Sodium Carbonate Dichloromethane CNa2O3 C8H10N4O2 Data Table 1.1 |Density | Weighs (g) | |Side arm flask (empty) + nipples |38.206g | |Side arm flask + residue |38.230g | |Clean finger |10.218g | |Finger + product |10.219g | Table 1.2 | |Caffeine Content (Mg ) | |Tea, black fermented |40-75 mg | |Tea recovered |24.0 mg | Experimental Procedure 1. In a 50ml beaker add 2g of Sodium Carbonate and add 15ml of H2O. Grab second beaker and add 10 ml of water.
ABTS is mixed with potassium persulphate to generate the free radical and Nitrites were produced when sodium nitoprusside were mixed with distilled water. The three herbal tea extracts were also able to reduce the blue color of ABTS solution into neutral color with their scavenging activity (51.63 to 81.62%) for R canina , (28.42 to 66.91) T pratense and( 43.85 to77.82%) of M alba. R canina in nitric oxide assay also showed strong radical scavenging activity to reduce the production of nitrates as compared to other two extracts ranging from R canina (48.09 to 80.03 %) T pratense (35.45 to 68.70%) and (38.25 to 72.39±%) for M alba .Lipid peroxidation is an mechanism to damage cellular injury and used as indicator of oxidative stress(Esterbaur et al., 1991).Poly unsaturated fatty acids are damaged by free radicals and create a process of chain reaction which is divided into three phases namely initiation propagation and finally termination (Suresh and Annam,2013)..In general the examined extract of R canina expressed strong antioxidant activity to stop damage of lipids. The largest inhibitory activity again was exhibited by Aqueous extract of R canina with IC50 values(62.65µg/ml) followed by M alba (92.10µg/ml) and least inhibitory activity was showed by T pratense (119.51µg/ml).BHT was used as positive control in all the in
It protects bones, boosts the immune system, keeps the mind young, and aids in weight loss. If people do not like a certain flavor there are many others to choose from, each containing a different substance that will lead to a health advantage. As more discoveries are made about how tea helps health it may begin being used as a medicine. For starters, what is tea? Tea is one of the most ancient and popular beverages consumed around the world.
Micro – scale Reduction of a Ketone to an Alcohol: Benzophenone to Diphenylmethanol with Sodium Borohydride Abstract: Purpose of experiment 2.1 was to perform reduction reaction of benzophenone to diphenylmethanol with sodium borohydride as a reducing agent. The reducing agent was used in excess to ensure complete reduction of the carbonyl group. The product was isolated as a solid by filtration and its purity was checked using Thin Layer Chromatography with different ratios of mixture of polar and non – polar solvents and by checking its melting point, which was 520C - 620C. Infra – Red spectroscopy was not performed, however previously printed graphs were compared and analysed based on tables in Chemistry Laboratory Manual. Purpose of the Experiment: To produce diphenylmethanol from the reduction of benzophenone by using sodium borohydride as a reducing agent.