A high-performance emergency flotation pod contains a small cylinder of pressurized helium with a volume of 80 cm3.
When the helium gas is fully discharged into the flotation bladder at sea level, it expands to a volume of 760 cm3.
The ambient atmospheric pressure at sea level is 102 kPa.
Calculate the pressure of the gas when it was sealed inside the cylinder. Use the equation:
P1=P2×V2V1 P_1 = \frac{P_2 \times V_2}{V_1} P1=V1P2×V238 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.