Scientific method
Introduction The discovery of ferrocene in the 1950s was a doorway to the area of organometallic chemistry and this occurrence was followed by the synthesis of massive organometallic complexes. Although the discovery was unexpected, the impact was enormous. These complexes were extensively used as industrial homogenous catalysts and also in organic synthesis where they supplied…
ABSTRACT The synthesis of cyclohexene from cyclohexanol is an example of elimination reaction. Cyclohexanol, a secondary unsaturated alcohol, undergoes dehydration reaction to form a good leaving group which is H20 because the OH group of an alcohol is a very strong base making it a poor leaving group. The reaction will then be followed by…
Introduction The aim of my report is to find the K (spring constant) by measuring the time of 10 complete oscillations with the range of mass of 0.05kg up to 0.3kg. It was been demonstrated by the lecturer and also the following instruction that I’ve been given. This experiment will show and prove that with…
Introduction It takes every person a little time to react to any event. For example, there is a small delay before you try to catch a ball moving towards you or trying to catch a falling glass from a certain height. This time is called your reaction time. There are many ways that you can…
Introduction The aim of this experiment is to establish the most suitable solvent required for recrystallising acetanilide, and to exhibit the methods of vacuum filtration and recrystallisation. Experimental Method (for selection of a suitable solvent): Four solvents: dichloromethane, methylated sprits, petroleum ether and water were tested to see how appropriate they were for recrystallising acetanilide….
Introduction The purpose of this experiment was to synthesize methyl nitro benzoate from methyl benzoate, as well as nitroacetanilide from concentrated nitric acid (HNO3), and concentrated sulfuric acid (H2SO4) by using an electrophilic aromatic substitution reaction. The HNO3 and H2SO4 were combined to form a nitrating solution, which was added to a mixture of methyl…
Introduction The task is to alter and record the different temperatures when magnesium ribbon is places hydrochloric acid. Research questions: How will the magnesium ribbon react to the hydrochloric acid? How quickly will the magnesium ribbon react to the hydrochloric acid at different temperatures? Will it be a slower reaction with the ice bath? Will…
Venturi & Orifice Meter INTRODUCTION As we learned in the Impact Jet lab, the speed of a moving jet of water is proportional to the water’s velocity. This is evident in a turbine flow meter, where the impact force of the water on the blades sets the rotor in motion. Once there is a steady…
Introduction The purpose of this lab was to use the scientific method to identify an unknown solution, based on the reactions (i.e. color changes) of known solutions with indicator solutions. These known solutions contained different types of macromolecules. Each type of macromolecule reacted with at least one indicator solution in a unique way, which allowed…
Abstract The role of plasmids in bacterial transformation with subsequent use in gene cloning and expression studies cannot be overemphasized. The concept of this work was to explicitly determine the effect of transformation of two different plasmids lux and pUC18 on the cellular phenotypic expression. Preparation of competent cells was first carried out using the Calcium Chloride technique and…
