Question

A major component of gasoline is octane . When liquid octane is burned in air it reacts with oxygen gas to produce carbon dioxide gas and water vapor. Calculate the moles of water produced by the reaction of of octane. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

Answer 1

The question is incomplete, the complete question is shown in the image attached to this answer.

Answer:

0.63 moles of water

Explanation:

The equation of the reaction is;

C8H18(g) + 25/2 O2(g) --------> 8CO2(g) + 9H2O(l)

If 1 mole of octane yields 9 moles of water

0.070 mol of octane will yield 0.070 * 9/1 = 0.63 moles of water

Hence, 0.070 moles of octane yields 0.63 moles of water.