Chemical Calculations 1.0 / 5 based on 1 rating ? ChemistryCalculations, moles and yieldGCSEWJEC Created by: Renee ElwardCreated on: 28-04-13 13:00 Calculating the Percentage Composition % = total mass of ( N ) atom x100 Mass number of the compound 1 of 3 Calculation the percentage yield Percentage yield = actual mass of required product x100 theoretical mass of required product 2 of 3 Calculating if a reaction is exothermic and endoth 1. Breaking all the bonds in the reactant ( the starting material ) 2. Make new bonds forming the product ( what is made during the reaction ) 3 of 3
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