By: Carla Mateo The main purpose of the experiment is to measure the rate of inversion of sucrose and its dependence on temperature. When discussing inversion, the origin of the usage of the term, in this context, comes from the way that the measurement is carried out. The sugar syrup concentration is measured using a polarimeter. The light, which is plane polarized, passes through a solution, a sample of pure sucrose, it undergoes a rotation. It is optically rotated to […]
Laboratory Manual Objectives. After completing this laboratory module, you should be able to: Understand, broadly, what occurs when drugs bind to blood serum proteins. Demonstrate proper use of the commercial UV/Vis spectrometer. Describe what happens to drug binding when concentration is varied. Use basic programming to upload and view a three dimensional protein structure. Introduction The most abundant amino acids in HSA are alanine (Ala), lysine (Lys), leucine (Leu), and glutamic acid (Glu).1,2 The abundance of the amino acids is […]
VIBRATION-ROTATION SPECTROSCOPY OF HCl By: John Ricely Abstract Using the Nicolet 6700 spectrometer, the spectrum for HCl was analyzed. There were two branches that were apparent in the result of the spectroscopy, the R branch and the P branch, that correspond to ∆J= +1 and ∆J= -1, respectively. Each peak, differentiating between 35Cl and 37Cl, is assigned an m value and then plotted with wavenumber vs. m value. Analytical software is used to derive an equation of the line […]
The Determination of Copper in Pennies By: Brooke Carmack Abstract: The percent composition of copper was analyzed for both pre and post 1982 pennies. This was determined by iodometric titration analysis. 1.0 Introduction: In this experiment, two pennies were analyzed. One of the pennies was pre-1982 while the other was post 1982. This was performed due to the change in the amount of copper used for pennies after 1982. Pennies before 1982 were made to contain 95% copper and […]
Acid protonates Converts strong base into weak base (bad to good leaving group) Water departs forming C+ (rate determining) Major product is the most substituted (stable) alkene Tertiary is the easiest to dehydrate because of their C+ The cation is a secondary cation. It can rearrange to a tertiary (our best friend) to retain a stable charge Thus rearranging to a more stable product. The product above forms abour 2.99% of the time. The E2 and SN2 dehydration of primary […]
An Exploration of Antibiotic Sensitivity & Resistance By: Tyler Ryan I. Introduction Understanding antibiotics is crucial to the world of medicine and biology. Antibiotics are a type of medicine used to target and kill bacterial cell infections. A growing issue of concern is that bacteria cells are becoming resistant, or unaffected, by current antibiotics. This makes bacterial infections a much more serious issue. Research has shown that overusing antibiotics is the primary cause for antibiotic resistance (Solomon Berg and Martin […]
