Answer:
3 moles
Explanation:
The balanced chemical equation in this question is given as follows;
C3H8 + 5O2 → 4H2O + 3CO2
Based on the above chemical equation, 1 mole of propane (C3H8) is required to react with 5 moles of oxygen gas (O2)
Hence, according to the question, the number of moles required to react with 15 moles of O2 is given as:
15 × 1 ÷ 5
= 15 ÷ 5
= 3 moles
