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Amount of substance

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Question 16

The equation for the complete combustion of propane is

C3H8+5O2→3CO2+4H2O \text{C}_3\text{H}_8 + 5\text{O}_2 \rightarrow 3\text{CO}_2 + 4\text{H}_2\text{O} C3​H8​+5O2​→3CO2​+4H2​O

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

A

0.1670.1670.167

B

0.1820.1820.182

C

0.2000.2000.200

D

0.2500.2500.250

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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