Chemical shift

PRINT YOUR OWN MEDICINE Chemist Lee Cronin is a professor of chemistry and nanoscience and chemical complexity. He founded the Cronin group who is focused on complex functional molecular architectures that are not based on biologically derived building blocks. Cronin’s idea is to “app” chemistry and by this he means making a “really cool universal chemistry set”. He speaks with confidence to a mature audience that has an interest in the future of chemistry and medicine and those who create or…

equations helps us mathematically see what is happing during the reaction besides performing and watching it occur. Being able to identify the limiting reagent, products produce, and solve for molarity is key to chemical analysis. Performing the experiment is just half of the equation in chemical analysis. This lab did not have many safety precautions except there was an open flame…

Abstract The purpose of this investigation is to determine whether the temperature can affect the reaction rate of enzyme activity. The enzyme activity was measured by five different temperatures, separated in tubes which later got measured by their height of foam after 10 minutes. Freshly-prepared potato juice was used as the enzyme for catalase. Since temperature is measured by the kinetic energy of molecules, the higher the temperature, the more movement of molecules. The lowest temperature…

The Kinetic Molecular Theory explains why gases behave the way they do. It explains how gas particles are in constant motion and create collisions that results in pressure. The theory is split up into four different postulates. Number one explains how gases are made up of tiny particles. To prove that those particles take up space, postulate #2 tells us that the particles collide with each other and those collisions make pressure. Pressure can either expand or shrink a flexible container,…

The purpose of this experiment was to determine the presence of the analgesic compounds acetaminophen, aspirin, caffeine, and salicylamide in the over-the-counter medications Anacin, Bufferin, Excedrin, and Tylenol. Thin-layer chromatography (TLC) was used to analyze solutions of the medications; the TLC plates were visualized using ultraviolet light and iodine staining.The ten micropipets used to spot the TLC plates were made from glass capillary tubes by heating the middle of each tube in a…

There are small particles in the air called aerosols. They are found in fog and smoke. These particles become larger in size if two processes occur. The first process is water vapor accumulating onto a particle. The next process is cool, rising air supporting the particle. Once the aerosol particles are large enough, they become cloud droplets that will have a different mechanism of growing. Cloud droplets grow differently because they are larger in size. Instead, they grow by a new process…

Gravimetric Analysis of a Metal Carbonate Purpose The purpose of this lab is to find the mass of an unknown metal by conducting a double-displacement precipitation reaction, which is our gravimetric analysis. Once we find the precipitate mass, we can then find the molar mass by using the molar ratio given in the reaction equation. Procedure First, we set up the ring stand with a Bunsen burner, put a crucible on top of the pipe stem triangle and heated the crucible for a minute, then let it…

objective of this experiment is to get a better understanding of limiting reactants and chemical reactions as whole. It also helped us determine how the amounts of sodium carbonate and calcium chloride affect the chemical reaction made: calcium carbonate. Introduction: This lab was to show the relationship between reactants and products. In this case, we used calcium chloride and sodium carbonate. This made a chemical reaction and eventually formed calcium carbonate. The goal of this lab…

For our diffusion experiment our group decided to work with salt water and gummy bears. Our experiment tested the weight of the gummy bears per salt dilutions. Our tests included 1g 2.5g 5g, 1.5g, and 10g of salt diluted with water. We knew that the higher the concentration of salt diluted into the water the heavier the diffused gummy bear would be, therefore we measure weight as our numerical data. My hypothesis was that the 10g dilution of salt would have the gummy bear with the largest…

Synthesis of reactive iron Chemical reduction method of Ferric chloride by sodium borohydride following reaction (Eq.1), was used to synthesize ZVI [14]. 〖2FeCl〗_3+〖6NaBH〗_4+〖18H〗_2 O→〖2Fe〗^0+〖21H〗_2+〖6B(OH)〗_3+6NaCl (1) Ferric chloride hexahydrate solution was prepared by dissolving 5 g of FeCl_3.H_2 O (99.0%, Junsei Chemical Co., Japan) in 125 mL of deoxygenated deionized (DI) water. Moreover, 3.5 g of Sodium borohydride (NaBH_4, 98.0%, Sigma–Aldrich Inc., USA) were dissolved in 125 mL…