Unit 3 – Chemistry in Society Pupil Notes

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Unit 3 – Chemistry in Society Pupil Notes CfE Higher Chemistry Unit 3 – Chemistry in Society Pupil Notes

Calculations from Equations A balanced equation is taken to give the relative number of moles of each reactant and product. Since the mass of one mole of any substance is expressed in grams, the masses involved can then be calculated as shown. Worked Example Calculate the mass of water produced on burning 1g of methane CH4 + O2 CO2 + 2H2O 1 mole 2 moles It is not necessary to calculate the masses of carbon dioxide and oxygen – these substances are not included in the question.

Calculations from Equations