Equations 4.0 / 5 based on 3 ratings ? ChemistryequationsGCSEAQA Created by: Millie FreeCreated on: 13-10-17 17:21 How do you work out the rate of reaction? Amount of reactant used or amount of product formed / time 1 of 7 How do you calculate the %mass of an element in a compound? Ar * number of atoms of that element/ Mr of the compound *100 2 of 7 How do you work out the number of moles? Mass / Mr 3 of 7 How do you work out the volume of gas? Mass of gas /Mr of gas *24 4 of 7 How do you work out concentration? mass of solute/volume of solvent 5 of 7 How do you work out atom economy? relative formula mass of desired products/ relative formula mass of all reactants * 100 6 of 7 How do you work out the percentage yield? mass of product actually made/maximum theoretical mass of product*100 7 of 7
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