Quantitative Chemistry
Quantitative Chemistry from Edexcel GCSE C2 Exam
- Created by: Rhys Hudson
- Created on: 03-11-12 23:21
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- Quantitative Chemistry
- The relative formula mass is the sum of all relative atomic masses of atoms in formula
- The emperical formula shows the ratio of each atom in the formula
- percentage composition is the percentage of an element in a formula by mass
- Balanced equations are used to calculate reacting masses
- A yield is the amount of product made in a reaction
- The theoretical yield is the calculated yield
- The percentage yield is the actual yield divided by the calculated yield
- Industrial chemists consider yields, waste and reaction rates when making products
- Actual yield is nearly always less than the theoretical yield because not all reactants react, the reaction may be reversiable and other reactions may occur
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