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Amount of substance

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Question 5

A sample of 220 cm3 of helium and a sample of 180 cm3 of xenon, each at 293 K and 120 kPa, are transferred into an evacuated flask of volume 1.50 dm3. What is the pressure of the gas mixture in the flask at 293 K?

A

17.6 kPa17.6\text{ kPa}17.6 kPa

B

32.0 kPa32.0\text{ kPa}32.0 kPa

C

64.0 kPa64.0\text{ kPa}64.0 kPa

D

320 kPa320\text{ kPa}320 kPa

Markscheme

Amount of substance Questions

  1. A Level
  2. /Chemistry
  3. /Amount of substance

79 exam-style questions on AQA A Level Chemistry Amount of substance, covering Relative atomic mass and relative molecular mass, The mole and the Avogadro constant, The ideal gas equation, Empirical and molecular formula, and Balanced equations and associated calculations. Each one has a worked solution and a mark scheme showing where the marks go.

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