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Chemistry Essay Examples

Sulfuric Acid Applications

Sulfuric acid is one of the most important industrial chemicals; more sulfuric acid is produced each year than is made of any other manufactured chemical. More than 40 million tons of it was produced in the United States in 1990 and was heavily manufactured in nearly every other country. It has widely varied uses and…

Titration Analysis of Aspirin Tablets

Chemistry 12 12/Oct/2011 Titration- Analysis of Aspirin Tablets Objective: Determine the percentage of aspirin (acetylsalicylic acid) present in two different commercial tablets by titrating the solution with a base. Also determine whether the aspirin is a strong or weak acid according to the Bronsted- Lowry and Lewis theories and deduce the formula of the acid-…

Research Proposal on Physical Chemistry

Physical chemistry is the branch of chemistry, the science of the genera; laws of the structure, composition and transformation of the chemical substances. Physical chemistry researches chemical phenomena with the help of the theoretical and experimental methods of physics. The history of physical chemistry is quite long and it started in the 18th century when…

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CHEM 241 Lab Final

What was the purpose of adding salt to the 5% ethanol in water solution that was extracted with pentanol in GC EXP 1 part 1? (2) 1. It maximized the amount of ethanol extracted by the pentanol 2. It assured that the extraction process is reproducible every time To solve for K, what equation was…

Chapter 8 Introduction to Metabolism

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? *catabolism Which of the following is a statement of the first law of thermodynamics? *Energy cannot be created or destroyed. Which of the following is an example of potential rather than kinetic energy? *a molecule of glucose Which of…

CHM2211L Experiment #3

Recrystallization most common method for purifying solid organic compounds In this experiment, we recrystallize and obtain the melting point for 2 compounds and synthesize a third. What are the solid compounds? acetanilide trans-cinnamic acid caffeine salicylate Acetanilide recrystallization solvent H2O trans-Cinnamic Acid recrystallization solvent CH3CH2OH/H2O Caffeine Salicylate recrystallization solvent Pet ether or Ligroine Caffeine is…

Chemistry Culminating Task – Formal Lab Report

“Chemistry; the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.” Introduction Generally, chemistry is the study of substances, compounds, and the ways…

The Discovery and Chemistry of Dry Ice

In 1835, the French chemist Charles Thilorier was the first man to discover dry ice. One day he opened a very large container of liquid carbon dioxide. The carbon dioxide would quickly evaporate, which left a solid dry ice in the bottom of the container. For the next 60 years, dry ice was observed in…

Structural and Electronic Effects Acids and Bases

Lewis acid – a substance that accepts an electron pair • All BrOnsted-Lowry acids are also Lewis acids, but the reverse is not necessarily true. Any species that is electron deficient and capable of accepting an electron pair is also a Lewis acid. • Common examples of Lewis acids (which are not BrOnstedLowry acids) include…

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