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Chemistry Essay Examples

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The Role of Geology in Influencing Water Chemistry

Water is and remains one of the important wants of the people, animals and the nature at large. Without water, they would be no life. Water is an unusual compound which has unique physical properties, and this makes it the compound of life, yet it’s the most abundant compound in the earth’s biosphere. The chemistry…

The Role of Geology in Influencing Water Chemistry

The Role of Geology in Influencing Water Chemistry Introduction        Water is and remains one of the important wants of the people, animals and the nature at large. Without water, they would be no life. Water is an unusual compound which has unique physical properties, and this makes it the compound of life,…

Cell bio lab report

Purpose: During this experiment we compared the hemagglutination reaction of control Con A solution at 2 mg/ml in Con A buffer with the hemagglutination reaction of your own purified Con A sample that you diluted previously at 2 mg/ml in Con A buffer. The purpose of this lab was to determine the strength of the…

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Rate of Isomerism of [Co(en)2Cl2]

In the course of this experiment the rate of isomerism for the coordination complex cis[Co(en)2Cl2]Cl was determined using UV/Vis spectrometry. Using a range of wavelengths the optimum spectrometer setting for analysis was identified. The corresponding maximum and minimum absorbance of the cis and trans isomers respectively at 540 nm meant that it was selected as…

Laboratory Techniques & Measurements

Laboratory Techniques & Measurements Objectives: Become familiar with several important laboratory techniques. Gain proficiency with some of the common measuring devices used in a chemistry laboratory. Determine the volume, mass, length, temperature, and density of objects and liquids 1. Length Measurements: Object Length (cm) Length (mm) Pop Can 12.0 120.0 iPhone 11.7 117.0 TV Remote…

Synthesis of Aspirin

In this experiment, the Oil of Wintergreen is put into an Erlenmeyer flask containing sodium hydroxide to create sodium salicylate. The solution is then refluxed which means that the solution will be boiled in a base, then condensed in a condenser. This replaces the carbon on the ester at carbon 1, with an oxygen atom…

Chem Lab Mixtures

In this lab, a mixture of naphthalene (C10H8), common table salt (NaCl), and sea sand (SiO2) will be separated using the separation techniques in order to demonstrate the properties of mixtures and their ability to be separated by physical means. INTRODUCTION: This lab was based on the separation of the components of a mixture. A…

Carbohydrate Lab Report

Qualitative identification of a substance is of significant importance in chemistry. Physical constants such as melting points have traditionally been used by organic chemistry for identification of unknown compounds. As for inorganic substances, the precipitation of a solid, results of a flame test, or the formation of a colored substance could all be keys to…

The Effect of Tempature on Enzyme Activity

Throughout this report you will gain information as to how temperature effects the amount of oxygen produced in an enzyme- catalase experiment. In the experiment we used liver extract as a catalase and created a chemical reaction within a reaction chamber between the catalase and hydrogen peroxide as well as three different controlled temperatures. In…

6.05 Rate and Collision Theory

Does surface area affect dissolving of Alka-Seltzer tablets? Materials: 1. solo cups 2. Alka-Seltzer tablets 3. Timer 4. Measuring Cup 5. Thermometer Procedures: 1. I placed out two of my solo cups on the counter 2. Then I put 1 cup of room temperature water into each cup. 3. Then put one Alka-Seltzer Tablet in…

To investigate the effect of carbon dioxide concentration on the rate of photosynthesis

Introduction Photosynthesis is a process that is essential for every living organism. Organic substances, such as glucose, are made from carbon dioxide and water by light energy from the sun. The light energy is absorbed by chlorophyll and converted to chemical energy. During the process, oxygen is released as a by-product. The rate of photosynthesis…

Determination of % Composition of Pennies Using Redox and Double Displacement (Precipitation) Reactions

Introduction: Oxidation involves the gain of electrons of hydrogen or the loss of oxygen or decrease in oxidation state. If zinc completely reacts with HCL, then the theoretical yield of copper should be equivalent to the actual yield. Purpose: In this lab, we will determine the percent composition of a modern (post-1982) penny by using…

Binders Beverage & Landscaping

To help Bill Binder pick the best route to transport his bottles from his plant to his warehouse we can use the shortest path model. The shortest path model finds how to transport items/people from on location to another while minimizing the total distance traveled, time taken or some other measures. In Bill’s case we…

Honors lab Chemistry

0.032 g Volume of gas collected (mL) 30mL Barometric pressure (atm) 1.1 atm Room Temperature (°C) 22 °C Vapor pressure of the water (torr) 19.8 torr Calculations: 1. Write the balanced equation for the reaction conducted in this lab, including appropriate phase symbols. (2 points) Mg(s) + 2HCl(a) + H2O(a) -> MgCl2(s) + H2 (g)…

History of organic chemistry

Chemistry has been called the science of what things are. Its intent is the exploration of the nature of the materials that fabricate our physical environment, why they hold the different properties that depict them, how their atomic structure may be fathomed, and how they may be manipulated and changed. Although organic reactions have been…

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