INVESTIGATION #2 DETERMINATION OF THE WATER OF CRYSTALLISATION April 4‚ 2012 OBJECTIVE: Chemical compounds that contain discrete water molecules as part of their crystalline structure are called hydrates. Hydrates occur quite commonly among chemical substances‚ especially among ionic substances. More often than not‚ such compounds are either prepared in‚ or are recrystallized from‚ aqueous solutions. Hydrates exist for ionic compounds most commonly‚ but hydrates of polar and non polar covalent molecules
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1750 Market Equilibrium Introduction: Market is a place where buyers and sellers come together and a good is offered for sale by producers and purchased by consumer (Blake‚ 1993). The relation between the demand and supply determines the equilibrium position of a particular good or a service. In this essay we will take a look at the factors that influence the equilibrium position of a good in the market‚ and the changes occur to the price and output levels of the good. Equilibrium "The market
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During the time period of 600 c.e to 1200 c.e‚ the two societies‚the Islamic empires and Medieval Europe both had the technological innovation of games and recreations that were played throughout the whole society. A difference among societies were that the Islamic empire had a more enlightened society in natural science‚ in contrast to Medieval Europe who had little knowledge about natural science. Another similarity that the two societies had were the value in literary technologies and processes
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P5. Homeostasis is the process by which a constant internal environment is maintained by our body. For instance‚ this means that in our body‚ temperature‚ blood sugar levels‚ etc must be kept within a narrow range even when we are in a freezing climate‚ or while doing vigorous exercise etc. All homeostatic control mechanisms have at least three interdependent components which are: The receptor responds to changes in the environment‚ for example‚ detects temperature change. Then‚ after the receptor
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Practical 4 Determination Of Fruit Firmness Introduction The development of sensors to measure fruit internal quality variable is one of the challenges of post – harvest technology. Several variables can currently be measured‚ including sugar content‚ firmness and internal disorders. Fruit quality is related to both internal variables (firmness‚ sugar content‚ acid content and internal effect) and external variables (shape‚ size‚ external defects and damage). Increasing consumer demand for high
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Determination of Chemical Formulae: The Reaction of Zinc and Iodine By Sarah Abstract: The main objective of this experiment was to use to the reaction between zinc and iodine to examine the validity of the Law of Conservation of Mass and the Law of Constant Composition. The Law of Constant Composition was tested by determining the mass of each of the reactants‚ zinc and iodine‚ and comparing their total to the mass of the zinc iodide product plus the excess zinc. The total mass of the reactants
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Melissa Carrithers AP Chemistry period 6 2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and
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galvanic cell will decrease due to the equilibrium shift to the left. The highest concentration (1.5 mol dm-3 ) was the lowest out of the 3 trials at 1.68 volts‚ thus proving that the higher concentration the lower the voltage. When the concentration of the product decreases‚ it will drive the equilibrium to the right to minimize the impact. Although‚ the lowest calculation (0.5 mol dm-3) is not necessarily the highest out of all 3 trials‚ it is not far off from 1 molar solution‚ only 0.2 Volts. The
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Determination of blood type Introduction: A blood type is a classification of blood based on the present or absence of inherited antigens substances on the surface of RBCs‚ these antigens are made by proteins‚ carbohydrates‚ and glycolipid‚ Now there are total of 8 blood type known for the international society of blood transfers ( ISBT)‚ Also 600 antigens are known for ISBT‚ Antigens are a type of protein (Y shaped) found in blood and it has a great role in the immune system to recognize any
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of mobility for users with laptops and smart phones while being able to stay connected to the internet by different networking topology. Wide Area Networks are used to connect server machines and computers across continents are countries for constant information updates. Wide Area Networks‚ are used across the globe‚ many networks connect with one another across continents to create one giant Wide Area Network. Wide Area Networks use optic fibre as their communication medium. The largest example
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