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Amount of substance

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Question 16

A sample of propane (C3H8\text{C}_3\text{H}_8C3​H8​) has a volume of 30 cm330\text{ cm}^330 cm3 at room temperature and pressure. The sample is burned completely in 1200 cm31200\text{ cm}^31200 cm3 of air. The final mixture is cooled to room temperature and pressure. The equation for the complete combustion is: \

\text{C}_3\text{H}_8(g) + 5\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(l){\char"24}$ Calculate the total volume of gas in the final mixture. Assume that air contains $21\%$ by volume of oxygen.
[4]
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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