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14.3 Gas pressure and temperature

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Question 17

An inflatable safety cushion contains a fixed mass of gas at a pressure of 100 kPa before a load is placed on it. The load is applied slowly, and once it is held in place the gas occupies 2.4 litres2.4\,\mathrm{litres}2.4litres at a pressure of 150 kPa. The temperature of the gas stays constant.

Use p1V1=p2V2p_1V_1=p_2V_2p1​V1​=p2​V2​. What was the volume of the gas before the load was applied?

[1]
A

3.6 litres3.6\,\mathrm{litres}3.6litres

B

1.6 litres1.6\,\mathrm{litres}1.6litres

C

2.4 litres2.4\,\mathrm{litres}2.4litres

D

1.2 litres1.2\,\mathrm{litres}1.2litres

Markscheme

14.3 Gas pressure and temperature Questions

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

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.

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