High-performance thermal paste is a complex mixture designed to efficiently conduct heat away from computer processors.
Table 1 shows the mass of each component in a sample of a high-performance thermal paste.
| Component | Mass in grams |
|---|---|
| Aluminium oxide | 171.2 |
| Zinc oxide | 29.8 |
| Silicone fluid | 43.6 |
| Boron nitride | 5.4 |
What name is given to a mixture that has been designed as a useful product, such as this thermal paste?
Calculate the percentage by mass of zinc oxide in this sample of thermal paste. Give your answer to 1 decimal place.
28 exam-style questions on AQA GCSE Chemistry 8.1 Purity, formulations and chromatography, covering 8.1.1 Pure substances, 8.1.2 Formulations, and 8.1.3 Chromatography. Each one has a worked solution and a mark scheme showing where the marks go.