A factory makes 1000 kg of a desired product.
The atom economy of the reaction is 40%.
Assume that all of the reactants are changed into products.
What mass of waste products is made at the same time?
400 kg
600 kg
1500 kg
2500 kg
57 exam-style questions on OCR GCSE Chemistry 5.1 Monitoring chemical reactions, covering 5.1.1 The technique of titration, 5.1.2 Theoretical mass, percentage yield and atom economy, 5.1.3 Concentration of a solution in mol/dm3, 5.1.4 Concentration calculations and titration results, 5.1.5 Molar gas volume and volumes of gases in reactions, and 5.1.6 Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.