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14.3 Gas pressure and temperature

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Question 36
H

A fixed mass of gas occupies 90 cm3 at 160 kPa. At constant temperature, its volume is reduced by 25% and is then increased by 20% of the reduced volume.

Use p1V1=p2V2p_1V_1=p_2V_2p1​V1​=p2​V2​.

What is the final pressure, to three significant figures?

[1]
A

178 kPa178\,\mathrm{kPa}178kPa

B

169 kPa169\,\mathrm{kPa}169kPa

C

144 kPa144\,\mathrm{kPa}144kPa

D

256 kPa256\,\mathrm{kPa}256kPa

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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