A manufacturer is testing two additives for a polymer used to make reusable laboratory trays. Tests show that each additive reduces bacterial growth by the required amount.
| Additive | Cost in £ per kg | Mass needed for 1 kg of polymer in g |
|---|---|---|
| Nanoparticles of additive P | 750 | 0.32 |
| Fine particles of additive Q | 16 | 15 |
Calculate the cost of each additive needed to make 1 kg of the polymer.
104 exam-style questions on AQA GCSE Chemistry 2.4 Bulk and surface properties of matter including nanoparticles, covering 2.4.1 Sizes of particles and their properties and 2.4.2 Uses of nanoparticles. Each one has a worked solution and a mark scheme showing where the marks go.