Quantative Chemistry Formulas 2.0 / 5 ChemistryCalculations, moles and yieldGCSEAQA Created by: Slartibartfast2Created on: 05-11-17 13:58 Formula for Moles Moles = Mass / Relative Formula Mass 1 of 7 Formula for Percentage Mass of an Element in a Compound Percentage Mass of an Element in a Compound = ((Relative Atomic Mass * Number of Atoms of Element) / Relatve Formula Mass of Compound) * 100 2 of 7 Formula for theVolume of Any Gas at Room Temperature and Pressure Volume of Gas = (Mass of Gas / Relative Formula Mass of Gas) * 24 3 of 7 Formula for Concentration (using mass) Concentration = Mass of Solute / Volume of Solvent 4 of 7 Formula for Concentration (using moles) Concentration = Number of Moles of Solute / Volume of Solute 5 of 7 Formula for Atom Economy Atom Economy = (Relative Formula Mass of Desired Prducts / Relative Formula Mass of all Reactants) * 100 6 of 7 Formula for Percentage Yield Percentage Yield = (Mass of Product Actually Made / Maximum Theoretical Mass of Product) * 100 7 of 7

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