IMPORTANT FORMULAS C2 2.0 / 5 based on 1 rating ? ChemistryAtomsGCSEEdexcel Created by: leahCreated on: 13-06-13 07:12 calculating relative atomic mass of isotopes (% of isotope x mass of isotope) + (% of other isotope x mass of other isotope) ÷ 100 i.e chlorine 17 x 35 + 25 x 37 ÷ 100 = 35.3 1 of 3 Rates Of Reactions Rate of Reaction= Amount of reactant used or product formed÷time taken so if 24cm of hydrogen gas was produced in 2 minutes the rate of reaction would be 24 ÷2 = 12 2 of 3 Relative Formula Mass add up the ARs of the elements so co2 would be 12+16+16 3 of 3
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