Mix pairs of solutions in the following ways, and record all of your observations in the data table. System 5: FeCL3 + KSCN System 6: Fe CL3 + AgNO3 System 7: FeCL3 + K4Fe(CN)6 Part B: Reactions of Acids To four of your calibrated test tubes, add 3-ml of hydrochloric acid, and to four different test tubes add 3-ml of HNO3.…Test the reaction of the acids to litmus paper by dipping a glass rod into the test tube containing the acid you are testing and touching it gently to both the blue and red litmus paper. Record observations in the data table. Make sure you rinse off the
Introduction: This experiment was executed to determine the concentration 7 different solutions with different concentrations. The solution was part water and part Bovine Serum Albumin (BSA). To determine the concentration, a spectrophotometer was used. The use for a spectrophotometer is to determine the concentration of a liquid using light to determine the absorbency. Materials & Methods: First .5 mls of 2000 µg/ml BSA Standard was obtained in a test tube.
General Chemistry I51 Extraction of pigments Author: Hengye Zuo Lab Partners: Meshach, Todd, Asiac Instructor: Lindsey Date lab performed: 03/20/2012 Date report due: 03/27/2012 Abstract The molar absorptive (E) of red food dye 40# (Allura red dye 40#) at 520 nm was determined to be 2.7*10^5M. The determination will be accomplished using a beer’s law analysis. A series of five standards prepared from a stock solution using parallel dilution. The absorbencies of the standards were measured and plotted. As we know the equation C1V1=C2V2, we can get a set of concentration (g/L) of different ratio of Red #40.
To begin, we were told the final results of the experiment before we started in order to know what to look for when conducting the experiment and analyzing our data. We had determined ahead of time that to know if the solutions contained starch, glucose, chloride, protein, or glucose; we needed to see a color change during the mixing of two solutions. In our experiment my group mixed four solutions with four different solutions. These solutions included gelatin, starch, salt, and glucose in the first group and biuret’s, lugol’s, silver nitrate, and benedict’s solution. We recorded the observations of color changes that occurred when mixing the solutions into a data table.
After we added the KHP to the 50 mL of water, we placed each one of the flasks onto a stir plate with a magnet in each flask so we achieved maximum stirring. This process took about 5 minutes for all the flasks to be completely stirred. After my group that the flasks were mixed enough, we added roughly 5 drops of indicator (phenolphthalein) and then got our burette and added
Repeat steps one and two 2. Place one drop of red dye into the test tube 3. Place one drop of yellow dye into the tube 4. Compare the controlled color to the new color 5. Clean up lab Data: Trial | # of Dye Drops | Color | 1 | 2 red, 1 yellow | Very dark red | 2 | 1 red, 1 yellow | Light colored red | Analysis: By first placing two drops of red dye, and one drop of yellow dye into the 10ml of water, the color became too dark of a red to match the controlled substance.
These proteins consist of three catalysts and two regulatory enzymes . If the enzymes that are made from these genes are faulty, then the amino acids can’t break down. This is what causes MSUD. The severity is based on levels, classic, intermediate, intermittent, and thiamine-responsive. (Adrian, 774).
Introduction The reaction of five transition metal cations with different solutions was studied to determine the identity of the cations. Then Paper Chromatography was used to determine two unknown components of the same five metals by measuring the movement of the solutions. Materials and Methods The first part of this lab was to identify each of five transition metal cations. Initially, 1 drop of each of the five transition metal cations was added to separate holes in the spot plate and the color of each was recorded. Then, 3 drops of 3 M HCl was added to each of the solutions and the color of each was recorded.
Experiment 5- Limiting and Excess Reagents Purpose The purpose of this experiment was to calculate product and reactant amounts using reaction stoichiometry, as well as calculating the limiting and excess reagent in a copper (II) nitrate and potassium iodide reaction. We tested the reaction with different amounts of Cu(NO3)2 and KI making duplicates of each, with a total of 4 test tubes per group. Procedure Found in lab manual starting on page 91. 1. Collect 4 small test tubes and weight them.
During this test I used 2mL of Egg Albumen solution, 2mL of honey solution, 2mL of the protein solution, 5 drops of the unknown solution (3), and 3 drops of Biuret reagent to each solution. My third and final test was for Lipids