A major component of gasoline is octane C8H18. When liquid octane is burned in air it reacts with oxygen O2 gas to produce carbon dioxide gas and water vapor. Calculate the moles of water produced by the reaction of 2.2mol of oxygen. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

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Asked Sep 5, 2019
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A major component of gasoline is octane 
C8H18. When liquid octane is burned in air it reacts with oxygen 
O2 gas to produce carbon dioxide gas and water vapor. Calculate the moles of water produced by the reaction of 2.2mol of oxygen. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits. 
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Expert Answer

Step 1

Given, when liquid octane is burned in air it reacts with oxygen O2 gas to produce carbon dioxide gas and water vapor. The balanced chemical reaction can be written as:

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16 CO218 H20 2 C8H1825 O2

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Step 2

From the above reaction, it is evident that:

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25 mol of O2 reacts to give 18 mol of H2O 18 mol of H2O 25 1 mol of O2 reacts to give -0.72 mol of H20 :. 2.2 mol of O2 reacts to give 0.72 x 2.2 mol of H20 - 1.584 mol of H20

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Step 3

In multiplication, the final answer should be reported as having the same number of significant figures as the number with least number of significant figu...

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