This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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For GCE, certain topics consistently appear across years. For Chemistry, you can expect questions on Organic Chemistry, covering hydrocarbons, functional groups, and their reactions. Stoichiometry, including mole concept, calculations involving mass, volume, and concentration, is also very common. Additionally, Acids, Bases, and Salts, focusing on definitions, reactions, and pH, is a frequent topic. In Economics, the Basic Economic Problem (scarcity, choice, opportunity cost) and Demand and Supply (factors affecting, equilibrium, elasticity) are fundamental and almost always tested. Questions on Market Structures (perfect competition, monopoly, oligopoly) are also very common. For Citizenship, key areas include the Rights and Responsibilities of citizens, covering civil, political, and social rights, as well as duties. Government and Governance, including types of government, electoral systems, and the roles of institutions, is another recurring theme. Finally, the Rule of Law and Justice system, encompassing the legal framework and human rights, is frequently examined. What's next? Send 'em!