Chemistry Essays

Chemistry essays are different from those who are more related to creative writing. They should be based on critical thinking, logic, and proper evaluation. Sometimes these essays are built on solving chemical equations and other problems. You need to have the solid theoretical background to prepare homework which deserves the highest grade. When students cannot cope with the tasks alone, they seek help at writing service. Our company is one of the best in this specialization. We do not only offer free samples on any topic but help with preparing the entire work within the quickest time.

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Solution Preparation And Standardization Argumentative

All chemists must know how to prepare solutions of varying concentrations because many reactions in quantitative analysis take place in an aqueous medium. In this experiment, solutions were made using 2 methods. The first method used was dissolution. A specific mass of solid was dissolved in a specific volume of …

Chemistry Halide Ions

Purpose: There are four halide salts used in this experiment that are found in the human body. Sodium fluoride is poisonous, but has been traced to be beneficial to humans in the prevention of tooth decay. Sodium chloride is added to many of our foods to increase flavor. Sodium chloride …

Literature and Composition

European sailor, narrates the story, goes to Africa to pilot a riverboat for a Belgian ivory trading company, duty to seek out Kurtz, another riverboat captain, and bring him back to the trading companies central.Most successful agent for the trading company, becomes so entwined in his trade that he breaks …

Stoichiometry Quiz

Stoichiometry II – Mole Calculations/ Limiting and Excess Reagent – Lecture Notes 1. Given the balanced equation N2(g) + 3H2(g)  2NH3(g) How many moles of ammonia are produced when 0.60 mol of nitrogen reacts with hydrogen? 2. Given the equation: SiO2 + HF  SiF4 + H2O a. Calculate …

Complexometric Determination of Nickel using EDTA

Introduction: The Aim of the experiment is to determine the percentage of nickel salt using a complexometric technique. Ethylenediaminetetraacetic acid (EDTA) is a hexadentate ligand which forms stable complexes with most metal ions, thus is widely used to determine metals in complexometric titrations. EDTA can be represented as H4Y and …

Chemical Hazards

Chemicals can affect the skin by contact or they affect the body either through the digestive system or via the lungs if air is contaminated with chemicals, vapor, mist or dust. There can be an acute effect, i.e. the person is affected immediately, or there can be a chronic effect, i.e. …

Chemistry of Coffee

Before coffee is roasted, it is referred to as “green coffee”. The green coffee is primarily made up of caffeine, lipids, carbohydrates, proteins (amino acids), and organic acids (although inorganic acids exist in coffee as well). These groups are quite stable in the green phase, and it is the carbohydrates, …

Chemistry Rusting

1. Find out which substances are essential for rusting to occur. 2. Find out how the rusting process can be inhibited and how it can be promoted. Hypothesis: I predict that air (oxygen) and water are necessary for iron to rust. The nail in water with air will rust while …

Spectrophotometric Determination of the Equilibrium Constant of a Reaction

The experiment determined the equilibrium constant for the formation of the FeSCN2+ complex. Using a spectrophotometer, the absorbance of FeCl3, KSCN and HCl standard solutions of known concentration was measured and graphed to determine the absorptivity coefficient. This coefficient was then used to calculate the actual concentrations of the FeSCN2+ …

Redox Titration Winkler Method For Dissolved Oxygen Determination

Redox Titration: Winkler Method for Dissolved Oxygen Determination The three main objectives of the experiment are to (1) determine dissolved oxygen (DO) in water using the classical method (redox titration), (2) discuss the chemistry behind the Winkler method for DO analysis and (3) describe the sampling technique for the analysis …