A fixed mass of gas is sealed in a flexible reservoir. Its temperature remains constant. The pressure around the reservoir is reduced as shown.
| Stage | Pressure around reservoir |
|---|---|
| Initially | 250 kPa |
| After first reduction | reduced by 20% |
| After second reduction | reduced by a further 25% |
The volume of the gas is initially 2.4 cm3. The pressure of the gas matches the pressure around the reservoir at each stage.
Calculate the increase in the volume of the gas after both pressure reductions.
108 exam-style questions on Edexcel GCSE Physics 14.3 Gas pressure and temperature, covering 14.3.1 Gas pressure and particle motion, 14.3.2 Temperature and pressure at constant volume, 14.3.3 Absolute zero and the kelvin scale, 14.3.4 Compressing and expanding gases, 14.3.5 Volume and pressure at constant temperature, and 14.3.6 Doing work on a gas. Each one has a worked solution and a mark scheme showing where the marks go.