Methylene chloride: ethanol (1:1 solution) What solvent system will you be using to "develop" your TLC plates in the TLC of Analgesics lab? ethyl acetate with 0.5% solution of acetic acid How will you be visualizing your TLC plates in the TLC of Analgesics Lab? an UV lamp or a UV light What is the name of the hydrogenation catalyst used in the Hydrogenation of Olive Oil Lab? 10% Palladium on
We used 1g of Na2CO3 -Sodium Carbonate. This would allow for the full precipitate to form. 4) Procedure: Refer to CHE 111 lab manual, experiment Stoichiometry of a Precipitation Reaction on page #104 5) Data / results. We used 1g of Na2CO3 -Sodium Carbonate in combination with 1g CaCl2·2 H2O-Calcium Chloride, Dihydrate to form the precipitate reaction. Na2CO3 aq + CaCl2*2H2O aq = CaCO3 s + 2 NaCl aq + 2 H2O aq Molar Mass: Ca = 40.08 Cl2 = (35.45) x 2 = 70.9 2H2O = (18.02) x 2 = 36.04 40.08 + 70.90 + 36.04 = 147.02 g/mol CaCl2*2H2O Theoretical yield: 1g CaCl•2H2O x 1 mol CaCl•2H2O x 1 mol CaCO3 x 100.09g CaCO3 = 0.68 g CaCO3 147.02g CaCl•2H2O 1 mol CaCl•2H2O 1 mol CaCO3 Mass of weighing dish = 0.6g Mass of filter paper =
The Effects of Consumption on High Fructose Corn Syrup. High fructose corn syrup is a sweetener made by processing corn syrup to increase the level of fructose, usually to between 42% and 55% of the total sugar, with the balance being glucose. It is used extensively as a sweetener in processed foods and soft drinks, particularly soda and baked goods, but it is included also in many foods not normally thought of as sweet foods (“High”). High fructose corn syrup must be banned from all human consumption because of the negative health issues. High fructose corn syrup is associated with liver scarring.
The newest form being touted as the best invention since the discovery of testosterone is creatine ethyl ester. However, the vast majority of research to date showing creatine effects on muscle mass and performance used the monohydrate form and most creatine found in supplements is in the monohydrate form. There are many and surprisingly complicated problems with the above forms, but I will do my best to cover the essential issues. For one thing, these forms have little or no research supporting any of their claims, some of which are either totally outlandish, or biologically impossible. Many companies selling these products make claims, for example, that creatine monohydrate is poorly absorbed and or poorly metabolized by the body.
Kyla Emerine Date of Experiment: April 15, 2015 Report Submitted: August 17, 2015 Title: Colligative Properties and Osmotic Pressure Purpose: To observing changes of colligative properties in freezing and boring points, by adding salt to a solution. Procedure: In this experiment I performed various procedures such as adding different amounts of salt to tap water that was freezing or boiling and observed how it changed the temperatures. Data Tables: Data Table 1. Dialysis Tubing Results Time: |Mass of Dialysis Tubing and Contents | 0 minutes |6.5g| 30 minutes |6.8| 60 minutes |7.2| Questions A. In your experiment, is the light corn syrup in the dialysis tubing hypertonic or hypotonic to the water?
The purpose of this lab is to focus on how to make zinc iodide in a different way using compounds instead of elements, which are barium iodide and zinc sulfate. We will see if the reaction between these two compounds will occur and make a prediction by writing a chemical equation. The procedures for this lab are to place a small test tube inside a 50mL beaker and weigh it. Then, using a spatula, add 0.45±0.03 g of zinc sulfate heptahydrate into the small test tube and record the mass. After that, dissolve the sample in 2 mL of deionized water and shake the test tube for 1 to 1 ½ minutes to dissolve the solid.
Calculate the Normality of the vinegar using the previously given equation. Na = (Nb)(Volumeb) (Volumea) C. Calculate the mass of the acetic acid in grams using the previously given equation. Massa = (Na)(GMWa) D. Calculate the percentage of acetic acid using the previously given equation. % Acid = Massa(g/L) x 100 1000g/L Discussion and Conclusion: Questions: LabPaq question guidelines: Answer questions A and G in the lab manual. Skip questions B, C, D, E and F in the lab manual, and answer these instead: A.
EXPERIMENT: TECH 0704, Distillation, macroscale technique only, simple and fractional: Substitute a mixture of 25 mL ethanol and 25 mL water for the toluene/cyclohexane mixture. Record the temperature at 2 mL intervals of distillate. Use glass beads to pack the fractionating column. Construct a graph of temperature vs volume for each distillation in your lab notebook. Compare the efficiencies of the two distillation methods in your lab notebook.
We added anhydrous Sodium Sulfate as a drying agent. To complete, we distilled the cyclohexene and collected the product. Knowing this data, we determined the yield % which is 58.5%. This experiment features the dehydration of cyclohexanol and produce cyclohexene. The acid catalyzed dehydration of cyclohexanol with distillative removal of the resulting cyclohexene from the reaction mixture
You'll also find it in processed foods ranging from salad dressings and ketchup, to jams, jellies, ice cream and many others - even bread. HFCS contains 14-percent fructose, much more than regular corn syrup. I'm concerned that it has disruptive effects on metabolism, because the body doesn't utilize fructose well, and humans have never before consumed it in such quantity.Of course, HFCS isn't solely to blame for the obesity epidemic. The AMA correctly pointed out that as consumption of HFCS rose, Americans were also consuming more calories (of all kinds) and becoming less active. All told, however, consumption of HFCS in the United States increased by more than 1,000 percent between 1970 and 1990, and a study published in the April 2004 issue of the American Journal of Clinical Nutrition, concluded that Americans over the age of two consume more than 300 calories daily from caloric sweeteners, one-sixth of their average daily calories.