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Amount of substance

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Question 7

The equation for the complete combustion of propene is

2C3H6(g)+9O2(g)→6CO2(g)+6H2O(l) 2\text{C}_3\text{H}_6(\text{g}) + 9\text{O}_2(\text{g}) \rightarrow 6\text{CO}_2(\text{g}) + 6\text{H}_2\text{O}(\text{l}) 2C3​H6​(g)+9O2​(g)→6CO2​(g)+6H2​O(l)

What is the mole fraction of oxygen in a mixture of propene and oxygen with the minimum amount of oxygen needed for complete combustion?

A

0.1820.1820.182

B

0.8180.8180.818

C

0.8330.8330.833

D

0.9000.9000.900

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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