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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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Group II Metals

Aim To find out the properties and trends of Group II elements using Magnesium, Calcium and Barium to investigate reactions of the metals with water, the reaction of the oxides with water and acid, the solubility’s of the hydroxides and carbonates and the thermal stabilities of the carbonates. Introduction Group …

Decompose Copper Carbonate by Heating and Heasure the Amount of Gas Produced

Introduction: To find out the correct formula, I will need the aid of an experiment. I will have to decompose the copper carbonate by heating and measure the amount of gas produced. The volume of gas will help me determine which equation is correct. Method: 1. Set up the apparatus …

Determining the Correct Equation for the Decomposition of Copper Carbonate

The task set is to prove or disprove which of the two given equations is correct by thermally decomposing CuCO3 and analysing the two possible oxides formed. Equation 1: 2CuCO3 ?CuO(s) + 2CO2 (g) + 1/2O2 (g) Equation 2: CuCO3 ?CuO(s) + CO2 (g) In order to do this we …

Acid Rain Case

Acid Rain is rain, snow or fog that is polluted by acid in the atmosphere and damages the environment. When fossil fuels are burned they release mostly CO2, but they also release two harmful gases, sulphur dioxide and various nitrogen oxides. The sulphur dioxide, SO2, comes from the sulphur impurities …

Quantitative Determination of Food Colouring in Jelly Crystals using UV/Vis Spectroscopy

Introduction Food colouring are mainly used in the food processing industry today as colour gives the food product certain flavours as people associate colours with certain flavours. Some is to stimulate a colour that is perceived by the consumer as natural food products. Food colouring also provides an identity to …

Determining the Identity of an Organic Unknown

When supplied with a organic unknown there are many ways of determining its identity and it is important to use as much information as can be gained to work out the identity of an unknown as many are very similar in physical properties, chemical properties and/or chemical make up. In …

Enthalpy Change of a Displacement Reaction

To determine the enthalpy change of a displacement reaction (Between zinc and copper (II) ions) 5. Introduction : Excess zinc powder is added in a measured amount of aqueous copper (II) sulphate. The temperature change is then measured over a period of time so the enthalpy of this reaction can …

Enthalpy Change of the Hydration of Magnesium Sulphate

Objective To determine the enthalpy change of the hydration of magnesium sulphate (MgSO4) using Hess’s law. Procedures 1. The mass of a clean and dry polystyrene foam cup was weighed and recorded. 2. 50.0 cm3 of de-ionized water was measured by using a measuring cylinder 3. The 50.0 cm3 of …

Methods of Analysis and Detection

* Separation techniques of analysis (PC / TLC / GLC / Electrophoresis) * Mass Spectroscopy * Atomic emission spectroscopy * UV / Visible absorption spectroscopy * Combined spectral techniques (NMR / IR / Mass Spectra) By U6F Jacky Huang 2008/03 OR A. Introduction to chromatography All chromatography have the following …

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