A group of students investigated the osmotic change in mass of sweet potato cylinders when placed in different concentrations of sodium chloride solution. The table below shows their results.
| NaCl concentration / mol dm−3\text{mol dm}^{-3}mol dm−3 | Trial 1 mass change / g | Trial 2 mass change / g | Trial 3 mass change / g | Mean mass change / g |
|---|---|---|---|---|
| 0.1 | 0.36 | 0.33 | 1.84 | 0.35 |
| 0.6 | -0.24 | -0.27 | -0.27 | YYY |
Calculate the mean value YYY for the 0.6 mol dm-3 sodium chloride solution.
30 exam-style questions on AQA GCSE Biology 1.3 Transport in cells, covering 1.3.1 Diffusion, 1.3.2 Osmosis, and 1.3.3 Active transport. Each one has a worked solution and a mark scheme showing where the marks go.