Q1.
Propane burns to form carbon dioxide and water.
The equation for the reaction is:
C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l)
3.60 dm3 carbon dioxide is produced when a sample of propane is burned
in 7.25 dm3 oxygen.
Calculate the volume of unreacted oxygen.
Give your answer in cm3
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Volume of unreacted oxygen = __________________________ cm3
(4)

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