Chemistry · May / June 2021 · Paper 12 · Question 12
5070The mole and the Avogadro constant
10 cm3 of propane is burned in 70 cm3 of oxygen in a closed container. C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l) What is the total volume of gas present after the reaction? (Assume all volumes of gases are measured at room temperature and pressure.)
- A30 cm3
- B50 cm3
- C70 cm3
- D90 cm3
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Correct answer: B. 50 cm3
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