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14.3 Gas pressure and temperature

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Question 14

A marine biologist is studying gas bubbles in a deep freshwater lake.

A bubble released from the lake bed has an initial volume, V1V_1V1​, of 0.80 litres0.80\text{ litres}0.80 litres, at a pressure, P1P_1P1​, of 4.20 atmospheres4.20\text{ atmospheres}4.20 atmospheres.

The bubble rises towards the surface of the lake, where the pressure, P2P_2P2​, is 1.20 atmospheres1.20\text{ atmospheres}1.20 atmospheres.

Calculate the volume, V2V_2V2​, of the bubble near the surface.

Use the equation:

V2=P1×V1P2 V_2 = \frac{P_1 \times V_1}{P_2} V2​=P2​P1​×V1​​
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Markscheme

14.3 Gas pressure and temperature Questions

  1. GCSE
  2. /Physics
  3. /14.3 Gas pressure and temperature

38 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.

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