How to work out reacting masses

Just a little walk through because a few people in my class didn't get reacting masses, I personally thought it was easier than anything, but hey ho - some help if you need it. Or to just revise :)

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  • Created by: Raith
  • Created on: 18-03-14 18:27
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Reacting masses
Step 1: write down the balanced symbol equation
Step 2: write down the relative atomic/formula masses of the reactants and products
Step 3: use the balanced equation to write down the ratios of reactants and products
Step 4: convert to ratio of reacting masses
Step 5: calculate the scale factor and apply this to the ratio of reacting masses.
E.g. 1
28 grams of iron reacts with copper sulphate. What mass of copper will be
Fe + CuSO4 Cu + FeSO4
Relative atomic mass of Iron (Fe) = 56
Relative atomic mass of Copper (Cu) = 64
56 64
28 32


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