Economics Basic Economic Problem (choice and the allocation of resources) Nature of the economic problem – Finite Resources – Unlimited Wants 1) Our needs are limited (finite) e.g. food‚ water‚ air‚ shelter‚ warmth. These are known as Free Goods. 2) Our wants are unlimited (infinite) e.g. clothes‚ cars‚ holidays‚ jewelry. These are known as Economic Goods. We have infinite wants but limited resources in the world. Economic Agents- (individuals‚ firms‚ and governments) have to make rational
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The Chemistry of Toothpaste Toothpaste is not a new thing. It has been traced back to Ancient Egypt. They used a powdered rock and vinegar‚ which created a chemical reaction that dissolves the plaque on teeth. In 1900’s people used hydrogen peroxide and baking soda or chalk‚ pulverised brisk and salt as a toothpaste. Toothpastes today‚ are mostly made up of abrasives‚ surfactants‚ a detergent‚ a thickener‚ a moisturizer‚ water‚ flavouring agents‚ coloring‚ sweeteners‚ fluoride and desensitizers
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References: Petrucci‚ Ralph H.‚William S. Harwood‚ and Geoffrey F. Herring (2002). 8th edition. Masterton‚ William L. Cecile N. Hurley‚ and Edward J. Neth (2011). 7th edition. Chemistry: Principles and Reactions. CENGAGE Learning. Equilibrium Constants. http://www.ausetute.com.au/equicons.html Retrieved last: April 24‚ 2012. Appendix K2K1’ = K = (9.77x1012)(37) K = [Cr2O72-] = 3.61x1014
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Major Chemistry questions: 1. Analyse the progress in the development and use of a named bioploymer. This anslysis should name the specific enzyme(s) used or organism used to synthesise the material and an evaluation of the use or potential use of the polymer produced related to it’s properties. Polyhydroxybutanoate (PHB) Progress Analysis: - Bacteria first used to make PHB in 1925 at Pastuer Institute in Paris. - In 1970’s adopted by Imperial Chemical Industries (ICI) – Alcaligenes
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Name: Shahid Hussain Subject: Chemistry Teacher: Dr Ramani Topic: Comparing Solutions Saturated Solutions | A solution that can hold no more of the solute at a particular temperature is said to be a saturated solution at that temperature. | When someone adds sugar to iced tea‚ the sugar disappears. If you add one teaspoon of sugar to iced tea‚ you get an unsaturated solution. If you keep
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The chemistry of hairspray What is hairspray: introduction Hair spray (or hair lacquer) is a common household aqueous solution that is used to keep hair stiff or in a certain style. Weaker than hair gel‚ hair wax‚ or glue‚ it is sprayed to hold styles for a short period of time. Using a pump or aerosol spray nozzle it sprays evenly over the hair. Hairspray was first developed and manufactured in 1948 by Chase Products Company‚ based in Broadview‚ Illinois.Its active ingredient is a suitable
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TREATY OF VERSAILLES a)Which terms of the peace settlement of 1919 directly affected France? -France gained territory such as Alsace Lorraine and the Saarland (which were important industrial areas) -Also‚ german colonies become mandates ruled by the League of Nations and France would be able to make use of them. -The league of nations menat that France’s safety would concern other countries as it woul act as an international police force. -France’s safety was assured by the terms of the
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Economics Essay Questions 4a) Direct and Indirect taxes are two different types of tax that a government may impose in order to achieve some of its objectives. Direct tax is a tax on the earnings of consumers and producers such as an income tax. Indirect tax‚ however‚ is a tax on expenditure such as a Value Added Tax on all goods and services. The main difference between the two types of tax are that a direct tax is collected directly from the owner of it whereas an indirect tax is collected by
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6.08 Revolutions Module Project Name: Avianna Walden Teacher: Ms. Cawanzia Hughes What to do? You explored many events in this module such as movements of independence and reform. The lessons included revolutions‚ new ways of thinking‚ and examples of imperialism. Use this knowledge to create an illustrated timeline that highlights five of these events. 1. Latin American Independence Haitian Revolution The Haitian Revolution was a slave revolt in the French colony of Saint-Domingue‚ which
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Chemistry Notes Cracking: * 2 types of Cracking; Catalytic cracking and Steam/thermal cracking. * Catalytic cracking‚ using a catalyst called Zeolite (Aluminosilicate)‚ 500 degrees C‚ in the absence of air and at pressures just above atmospheric * Thermal cracking is done without a catalyst; steam is passed through very hot metal tubes at 700-1000 degrees C at just above atmospheric pressure. * This is used to break down longer chains of unsalable hydrocarbons into smaller salable
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