Name: Amra Aliyu Lab partner: Jamie Liang Lab: Empire of Electricity Course: Chem 106 Date: 7/11/2015 INTRODUCTION A galvanic cell is an electrochemical cell that goes through a redox reaction and produces electrical energy . It converts chemical energy to electrical energy and the energy goes from the anode to the cathode. In this lab we had manipulate an exothermic zinc reaction to produce electricity.
When they used indigo to make clothing colored. This is a chemical reaction because you have to get the right color into the clothing. Chemistry now is used for all kinds of things like making personal Items. I used a chemical reaction in my experiment because I mixed together dish washing detergent, water, hydrogen peroxide, and yeast. Now you can get a job in chemistry like a chemical engineer.
Depending on the type of electrophoresis units available, assemble the unit according to the teacher’s instructions with the end damn in place. 2. Place the electrophoresis unit in a horizontal position on a level table or countertop. 3. Place the “Gel Drawing Worksheet” on the counter horizontally next to or below the electrophoresis unit.
By using this experimental technique, we aim to recreate the elimination conditions in the kidney by working out the absorbance of samples at different time intervals and therefore use that to find the final concentration of the drug left in the blood system after a 60 minute time period. A calibration graph is draw up to help us see how the drug concentration in the blood stream over the time interval was affected. Absorbance is the measure of a quantity of light being absorbed by a sample and is measured by a spectrophotometer. A
Ion-exchange columns are prominent in research labs to target and remove certain ions from a solution or mixture (2). Essentially, an ion exchange column will exchange the K+ with the H+ ions and will result in a solution of hydrogen ions and the iron-oxalate anion. After this, an acid-base titration will be conducted. The hypothesis of this lab is that the creation of a coordination compound can help determine an unknown formula by determining the percent composition and conducting titration of the ions present in the
The analysis was carried on C18 shim- pack GIST (150mmx 4.6mm 5µ) column used as stationary phase. A freshly prepared mobile phase consisting of methanol: potassium dihydrogen phosphate buffer in ratio of (30:70 v/v), PH-3 adjusted using ortho phosphoric acid (OPA) these were filtered by 0.45µM Whatmann filter paper and sonicated before use. The flow rate of mobile phase was 1ml/min. The detection was carried out at 220 nm and run time was around 10 minutes. Selection of wavelength
Introduction An oxidation-reduction reaction involves transferring electrons in a chemical reaction. In a redox reaction, there are oxidizing agents that gain electrons and cause other substances to lose electrons, and reducing agents that lose electrons and cause other substances to gain electrons. Oxidation-reduction reactions are applied in many real-life situations. These reactions are often found in electrochemical batteries, photosynthesis and the burning of fossil fuels.1
Electrical engineering captivates me because of my interest in electricity and currents. Engineers use the various properties of electricity and current to base their designs around and design successful products. The job security of this job domain is well above average, in one way, shape, or form we will always need electricity which makes it exceedingly hard for companies to simply stop hiring
The materials used in this lab were a computer, Vernier Conductivity Probe, LoggerPro, distilled water and the solutions listed in the data table. III. Procedure: As follows in “05 Conducting Solutions” from the Biology with Computers folder of LoggerPro. IV.
In the lumen, iron is ferric (Fe3+) and needs to be reduced to ferrous (Fe2+) to cross the plasma membrane. On the surface of the membrane, ferric iron (Fe3+) is converted to ferrous by ferric reductase. The symporter called Divalent-metal transports Fe2+ with protons into the cell. Iron is transported into the cell by active transport. When ferrous enters the epithelium some irons are converted to Fe3+ which are stored in the cell at the mucosal ferritin and lost by shredding of epithelium cell.
A standard curve plotted during the analysis was used to extrapolate the concentration of iron in the urine samples (Sandell and Kolthoff, 1937). Reagents and Chemicals- Potassium iodate, Ammonium persulphate, Ceric ammonium sulfate, Arsenic trioxide, Sodium chloride, conc. Sulphuric acid and distilled water. Quantitative method based on
A drop of methyl red was added. Also, a 0.01M hydrochloric acid (HCl) was added in a dropwise manner from a syringe until the color of the solution matches that of the first test tube setup. The volume of the HCl used was recorded for the determination of the ionization constant of