Use the balanced equation for the combustion of octane to determine how many moles of H2O...

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Question

Use the balanced equation for the combustion of octane to determine how many moles of H2O are produced by the combustion of 29.7 moles of C8H18.

2C8H18(l)+25O2(g)→16CO2(g)+18H2O(g)

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Answer 1

Answer #1

2 C₈H₁₈ (l) + 25 O₂ (g) 16 CO₂ (g) + 18 H₂O (g)

From the balanced reaction

2 moles of Octane on combustion produces 18 moles of H₂O

or, 1 mole of Octane on combustion gives ( ) = 9 moles of H₂O

therefore 29.7 moles of Octane on combustion produces (29.7*9) = 267.3 moles of H₂O

Answer 2

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