An industrial lifting mechanism has a sealed chamber containing a fixed mass of gas. The gas initially has a pressure of 110 kPa and a volume of 4.5 × 10-3 m3.
When the mechanism supports a heavier load, the gas pressure increases to 275 kPa. The temperature of the gas remains constant.
Use the relationship p1V1=p2V2p_1V_1=p_2V_2p1V1=p2V2.
The conversion 1 m3=1000 litres1\,\mathrm{m^3}=1000\,\mathrm{litres}1m3=1000litres may be used.
What is the decrease in the volume of the gas, in litres?
1.8 litres1.8\,\mathrm{litres}1.8litres
6.8 litres6.8\,\mathrm{litres}6.8litres
2.7 litres2.7\,\mathrm{litres}2.7litres
4.5 litres4.5\,\mathrm{litres}4.5litres
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.