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3.5 Use of amount of substance in relation to volumes of gases

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Question 14
H

Propane burns completely in oxygen.

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

20 cm3 of propane is burned in 120 cm3 of oxygen. The gases left at the end are cooled to room temperature and pressure, so the water is a liquid.

What is the total volume of gas left at the end?

[1]
A

20 cm320\ \text{cm}^320 cm3

B

40 cm340\ \text{cm}^340 cm3

C

60 cm360\ \text{cm}^360 cm3

D

80 cm380\ \text{cm}^380 cm3

Markscheme

3.5 Use of amount of substance in relation to volumes of gases Questions

  1. GCSE
  2. /Chemistry
  3. /3.5 Use of amount of substance in relation to volumes of gases

40 exam-style questions on AQA GCSE Chemistry 3.5 Use of amount of substance in relation to volumes of gases, covering 3.5.1 Volumes of gases. Each one has a worked solution and a mark scheme showing where the marks go.

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