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AQA GCSE Combined Science: Synergy · 8465
Deduce the stoichiometry of a chemical equation strictly from the given masses of reactants and products.
Explain the critical effect of using a limiting quantity of a reactant on the final amount of product obtained.
Use a fully balanced symbol equation to precisely calculate the theoretical masses of reactants required or products formed.
Convert masses of reactants and products into moles, and subsequently convert those moles into simple whole-number ratios to balance chemical equations.
Explain the concept of a limiting reactant in a two-reactant system, understanding that one reactant is often kept in excess to ensure the limiting reactant is completely consumed.
Interpret complex chemical equations directly in terms of moles.
Calculate the effect of a limiting reactant on product yield, expressing the result in amounts of moles or masses in grams.
Calculate the precise masses of reactants and products using a balanced symbol equation alongside the mass of one specific given reactant or product.
Provide calculated answers to an appropriate and justified number of significant figures.